JP7078052B2 - Information transmitters, communication systems and programs - Google Patents

Description

The present invention relates to information transmission devices, communication systems and programs.

As a monitoring system for monitoring a production line at a remote location, there is a system described in Patent Document 1. In this system, when it is determined that the data related to the production line stored in the data storage storage means corresponds to the preset event setting condition, the data corresponding to the event setting condition is read from the data storage storage means. And this is sent to the client. In this system, data is transmitted when the event setting conditions are met, so that unnecessary traffic can be suppressed.

Japanese Unexamined Patent Publication No. 11-161322

However, in the technique described in Patent Document 1, the items of data transmitted to the client are constant, and there is no degree of freedom regarding the information items that the analyst wants to acquire. Further, in the technique described in Patent Document 1, there is no degree of freedom in the timing of data transmission, and traffic cannot be optimized. Further, the analyst may want to obtain information about the production line even if a specific event does not occur, but the technique described in Patent Document 1 cannot meet such a demand.

Therefore, one aspect of the present invention is to provide an information transmission device, a communication system, and a program capable of flexibly setting the transmission of information regarding a monitoring target in order to solve at least one of the above problems. The purpose.

The information transmission device according to one aspect of the present invention stores an operation information storage unit that stores a plurality of operation information items indicating an operation state to be monitored, and a plurality of control parameters that control transmission of the operation information item. Based on the parameter storage unit, which is a key-value database, the receiving unit that receives a received message including the control parameter setting information for setting the control parameter from the first external information device, and the control parameter setting information of the received message. Then, the parameter update unit for updating the control parameter stored in the parameter storage unit and the plurality of operation information items stored in the operation information storage unit are read out in the read cycle specified by the control parameter. The transmission execution of transmitting the transmission message generation unit that generates the transmission message and the transmission message generated by the transmission message generation unit to the second external information device at the transmission cycle or transmission time specified by the control parameter. The control parameter setting information includes a set having a control parameter key and a value of the control parameter, and the transmitted message is a set having a key of each operation information item and a value of the operation information item. including.

The communication system according to one aspect of the present invention includes the information transmission device, the first external information device, and the second external information device.

The program according to one aspect of the present invention has an operation information storage unit that stores a plurality of operation information items indicating an operation state to be monitored, and a key value that stores a plurality of control parameters that control transmission of the operation information item. A computer including a parameter storage unit which is a database receives a received message including control parameter setting information for setting the control parameter from a first external information device, and the control parameter setting of the received message. Based on the information, the parameter update unit that updates the control parameter stored in the parameter storage unit and the plurality of operation information items stored in the operation information storage unit are read out in the read cycle specified by the control parameter. The transmission message generation unit that reads and generates a transmission message and the transmission message generated by the transmission message generation unit are transmitted to the second external information device at the transmission cycle or transmission time specified by the control parameter. The control parameter setting information includes a set having a control parameter key and a value of the control parameter, and the transmission message includes a key of each operation information item and the operation information. Includes pairs with item values.

In the aspect of the present invention, the reading cycle of the operation information item stored in the operation information storage unit and the transmission message including the operation information item are transmitted by the control parameter of the control parameter setting information received from the first external information device. It is possible to specify the transmission cycle or transmission time. By specifying the transmission cycle or transmission time of the transmission message, the transmission cycle or transmission time of the transmission message transmitted from the information transmission device to the second external information device, and thus the traffic can be optimized. Further, the amount of transmitted messages can be optimized by designating the reading cycle for reading the operation information from the operation information storage unit. The control parameter setting information can be easily created by using the key and value of the control parameter stored in the parameter storage unit which is the key value database. Also, the sent message can be easily understood by the key and value.

FIG. 1 is a block diagram showing an outline of a communication system according to an embodiment of the present invention. FIG. 2 is a block diagram showing details of the communication system according to the embodiment of the present invention. FIG. 3 is a table showing an example of parameters stored in the parameter storage unit of the controller of the communication system. FIG. 4 is a sequence diagram showing information exchange between the administrator computer of the communication system and the controller. FIG. 5 is a diagram showing an example of setting information transmitted from the administrator computer to the controller. FIG. 6 is a diagram showing an example of setting reply information transmitted from the controller to the administrator computer. FIG. 7 is a sequence diagram showing information transmission in the communication system. FIG. 8 is a diagram showing an example of a transmitted message transmitted from the controller to the analyst computer. FIG. 9 is a diagram showing an example of an operation log file transmitted from the controller to the operation log file storage unit. FIG. 10 is a flowchart showing an example of an operation related to the management of the ring buffer in the controller. FIG. 11 is a flowchart showing another example of the operation related to the management of the ring buffer in the controller.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

<Approximate Configuration of Communication System> FIG. 1 is a block diagram showing an outline of communication system 1 according to an embodiment of the present invention. As shown in FIG. 1, the communication system 1 has a plurality of controllers (information transmission devices) 4 that control and monitor a plurality of robots (monitoring targets) 2, respectively, and a cloud server 6 that is remote from these controllers 4. Be prepared. Each robot 2 is a manufacturing robot in a factory, for example, an articulated robot.

The cloud server 6 includes a plurality of computers 7 and an operation log file storage unit 8. The computer 7 and the operation log file storage unit 8 are connected to the network 10.

The network 10 may be, for example, an in-house LAN (Local Area Network) or a public network. Further, the network 10 may be a wired network or a wireless network. Each controller 4 is connected to the network 10 via a gateway (GW) 12. Each gateway 12 performs edge computing processing for the controller 4, processing such as communication protocol conversion between the network 10 and the controller 4.

Further, the operation log file storage unit 14 at the time of failure is connected to the network 10.

<Detailed Configuration of Communication System> FIG. 2 is a block diagram showing details of the communication system 1, particularly details of the controller 4 and the cloud server 6. However, in FIG. 2, the network 10 and the gateway 12 are not shown.

As shown in FIG. 2, the cloud server 6 includes an administrator computer 7A (first external information device), an analyst computer (second external information device) 7B, an operation log file storage unit 8, and a message storage unit 9. Is provided.

The controller 4 includes a setting information reception / storage unit 40, a transmission unit 50, a transmission data storage unit 60, a robot control unit 20, and a shared memory (operation information storage unit) 30. The setting information reception / storage unit 40 includes a parameter storage unit 41, a setting information transmission / reception unit 42, and a parameter update unit 43. The transmission unit 50 includes a parameter processing unit 51 and a transmission processing unit 52. The transmission data storage unit 60 includes a read / write unit 61, a ring buffer 62, and a memory management unit 63. The robot control unit 20 includes a processor 21.

The controller 4 can periodically transmit a transmission message including at least one operation information item indicating the operation state of the robot 2 corresponding to the controller 4 to the analyst computer 7B. The controller 4 transmits a transmission message according to a plurality of parameters stored in the parameter storage unit 41 of the setting information reception / storage unit 40. The administrator computer 7A sends a message including setting information for setting these parameters to the controller 4. The controller 4 may send a transmission message to a plurality of analysts computers 7B.

The processor 21 of the robot control unit 20 generates various command values for controlling the operation of the robot 2 according to the state of the robot 2 according to the robot control program, and gives these command values to the robot 2. The shared memory 30 (operation information storage unit) stores these command values. The processor 21 overwrites the shared memory 30 each time it generates various command values at a certain moment. That is, in the shared memory 30, when a plurality of command values are stored, the immediately preceding plurality of command values are erased. Each command value is each operation information item.

The setting information transmission / reception unit 42 of the setting information reception / storage unit 40 of the controller 4 communicates with the administrator computer 7A. When the setting information transmission / reception unit 42 receives a message including the setting information from the administrator computer 7A, the parameter update unit 43 updates the parameters stored in the parameter storage unit 41 according to the setting information. When the parameters stored in the parameter storage unit 41 are updated, the setting information transmission / reception unit 42 transmits the setting reply information indicating all the parameters stored in the parameter storage unit 41 to the administrator computer 7A. The setting reply information allows the user of the administrator computer 7A to confirm the status of all the parameters stored in the parameter storage unit 41.

The transmission processing unit 52 of the transmission unit 50 of the controller 4 communicates with the analyst computer 7B, the operation log file storage unit 8, and the failure operation log file storage unit 14. The transmission processing unit 52 can periodically transmit a transmission message including at least one operation information item to the analyst computer 7B. Further, the transmission processing unit 52 can periodically transmit an operation log file including at least one operation information item to the operation log file storage unit 8. The transmission processing unit 52 may transmit the operation log file to a plurality of operation log file storage units 8. Further, when a communication failure with the analyst computer 7B occurs, the transmission processing unit 52 stores a failure operation log file including at least one operation information item accumulated over a plurality of times in the failure operation log file storage unit 14. Can be sent. The transmission processing unit 52 may transmit the failure operation log file to a plurality of failure operation log file storage units 14.

When the parameters stored in the parameter storage unit 41 are updated according to the setting information transmitted from the administrator computer 7A, the parameter processing unit 51 of the transmission unit 50 immediately or after a certain period of time has changed the parameter storage unit 41. All parameters stored in the parameter storage unit 41 are received from. The parameter processing unit 51 passes the parameter related to the transmission of the transmission processing unit 52 among these parameters to the transmission processing unit 52. Here, the parameters related to the transmission of the transmission processing unit 52 include, for example, a parameter that specifies the transmission cycle of the transmission message. Further, the parameter processing unit 51 passes some of these parameters to the transmission data storage unit 60. Some parameters include, for example, an operation information parameter that specifies an operation information item to be included in the transmitted message, and a parameter that specifies a read cycle for reading the operation information item from the shared memory 30.

The read / write unit 61 of the transmission data storage unit 60 reads the operation information item specified by the operation information parameter from the shared memory 30 at the read cycle specified by the parameter specifying the read cycle, and writes the operation information item to the ring buffer 62. The memory management unit 63 manages a write pointer indicating a write position of the ring buffer 62 and a read pointer indicating a read position, and whether or not there is a free area of the ring buffer 62 indicated as a difference between the pointer positions of the write pointer and the read pointer. Judge. The shared memory 30 is shared by the processor 21 of the robot control unit 20 and the read / write unit 61 of the transmission data storage unit 60.

The transmission processing unit 52 generates a transmission message including an operation information item stored in the ring buffer 62 in a transmission cycle specified by a parameter that specifies a transmission cycle, and transmits the transmission message to the analyst computer 7B. Therefore, the read / write unit 61, the ring buffer 62, and the transmission processing unit 52 function as a transmission message generation unit that reads the operation information items stored in the shared memory 30 at the read cycle specified by the parameter and generates a transmission message. do. The transmitted message generation unit selects an operation information item specified in the information setting information from a plurality of operation information items stored in the shared memory 30, and generates a transmission message. Further, the transmission processing unit 52 functions as a transmission execution unit that transmits the transmission message generated by the transmission message generation unit to the analyst computer 7B at a designated transmission cycle.

Each time the analyst computer 7B receives a transmission message from the transmission processing unit 52, the analyst computer 7B stores the transmission message in the message storage unit 9. Therefore, the user of the analyst computer 7B can browse the transmitted message received periodically.

The transmission cycle of the transmission message by the transmission processing unit 52 is preferably set longer than the read cycle of the operation information item by the read / write unit 61. As a result, it is possible to transmit a transmission message including operation information in each read cycle, which is read and accumulated in a short read cycle.

Further, the transmission processing unit 52 generates an operation log file including an operation information item stored in the ring buffer 62 separately from the generation and transmission of the transmission message, and periodically stores the operation log file in the operation log file storage unit 8. Send to. The operation log file storage unit 8 stores operation log files that are periodically received. The cycle for transmitting the operation log file is preferably set longer than the cycle for transmitting the transmission message. Thereby, the user of the communication system 1, for example, the user of the analyst computer 7B, can refer to the operation log file including the operation information items over a certain period of time at a desired time.

More specifically, the transmission processing unit 52 reads out the operation information items stored in the ring buffer 62 at any time, generates a provisional operation log file from the operation information items, and stores the operation information items. Then, the transmission processing unit 52 generates an operation log file over a certain period of time by integrating, that is, concatenating a plurality of provisional operation log files in the transmission cycle of the operation log file, and stores the operation log file in the operation log file storage unit. Send to 8. However, when the transmission cycle of the operation log file is short, the transmission processing unit 52 may transmit one provisional operation log file as it is to the operation log file storage unit 8. Further, when the operation log file generated by concatenating a plurality of provisional operation log files has a data amount larger than a predetermined amount, the transmission processing unit 52 may divide the operation log file and transmit it. ..

The operation information item included in the operation log file may be the same as the operation information item included in the transmission message, but may include more operation information items in addition to the operation information item included in the transmission message.

Further, when communication with the analyst computer 7B occurs, the transmission processing unit 52 generates a failure operation log file including operation information items accumulated in the ring buffer 62 over a plurality of times, and fails the failure operation log file. It is transmitted to the operation log file storage unit 14. The failure operation log file storage unit 14 stores the received failure operation log file. As a result, the user of the communication system 1, for example, the user of the analyst computer 7B, displays the operation log file at the time of failure including the operation information items accumulated in the ring buffer 62 for a certain period of time before the communication failure. It can be referred to later at the desired time. The operation information item included in the failure operation log file may be the same as the operation information item included in the sent message.

The operation log file and the operation log file at the time of failure have operation information items and time stamps. The time stamp may be a counter value assigned to the operation information item when the operation information item is written to the shared memory 30, or may be a reading time of the operation information item from the shared memory 30. The read / write unit 61 of the transmission data storage unit 60 attaches a time stamp to the operation information item and writes it to the ring buffer 62. The transmission processing unit 52 generates an operation log file and an operation log file at the time of failure by using the operation information item and the time stamp read from the ring buffer 62.

The user of the communication system 1, for example, the user of the analyst computer 7B, knows the time of the operation information item in the operation log file and the operation log file at the time of failure by referring to the time stamp, and obtains the operation information item in these files. Time series analysis is possible. In particular, for the failure operation log file, the operating state of the robot 2 immediately before the communication failure can be estimated by performing time-series analysis of the operation information items immediately before the communication failure.

Such time stamps can also be included in outgoing messages. In this case, the user of the analyst computer 7B can know the time of the operation information item in the transmitted message by referring to the time stamp, and can analyze the operation information item in the transmitted message in time series. In addition, by collating the time stamp in the sent message with the time stamp in the operation log file or the operation log file at the time of failure, the user of the analyst computer 7B can actually check the operation information item to be included in the sent message. You can know whether it is included in the outgoing message.

The functions of the setting information transmission / reception unit 42, the parameter update unit 43, the parameter processing unit 51, the transmission processing unit 52, the read / write unit 61, and the memory management unit 63 are recorded by a computer processor (not shown) in the controller 4. This can be achieved by reading and executing a program stored in a medium (not shown). In this case, the program (program code) itself read from the recording medium realizes the function of the embodiment. Further, the recording medium on which the program is recorded can constitute the present invention.

In this embodiment, in response to the instruction from the cloud server 6, the controller 4 does not transmit the necessary information items in the cloud server 6, but is designated as the setting information based on the setting information from the cloud server 6. The controller 4 transmits a transmission message having an item specified in the setting information in the transmission cycle. Therefore, the processing system of the setting information reception / storage unit 40 may be different from the processing system of the transmission unit 50, and the communication port of the setting information transmission / reception unit 42 may be different from the communication port of the transmission processing unit 52. In this case, if the timing of receiving the setting information and transmitting the setting reply information by the setting information transmitting / receiving unit 42 and the timing of transmitting the transmission message, the operation log file, and the operation log file at the time of failure by the transmission processing unit 52 are easily different. Can be made.

<Example of Parameter Stored in Parameter Storage Unit> FIG. 3 shows an example of the parameter stored in the parameter storage unit 41. The parameters shown in FIG. 3 are examples, and other parameters may be used or some parameters may not be used. The parameter storage unit 41 of this embodiment is a key-value database, and each parameter has a pair of "key" and "value". In this embodiment, each key is a string of four characters. The “explanation” in FIG. 3 is shown for ease of understanding and may or may not be stored in the parameter storage unit 41.

These parameters are roughly classified into control parameters and operation information parameters. Each operation information parameter corresponds to one operation information item, and the value specifies whether or not the corresponding operation information item should be included in the transmitted message. The value of the operation information parameter can be on or off. Turning on the value of an operation information parameter means that the operation information item corresponding to the operation information parameter should be included in the outgoing message. Off of the value of an operation information parameter means that the operation information item corresponding to the operation information parameter should not be included in the outgoing message. For example, if the value of the operation information parameter of the key r000 is on, the operation information item X corresponding to the operation information parameter is read from the shared memory 30 by the read / write unit 61 and included in the transmission message by the transmission processing unit 52. Be done. For example, if the value of the operation information parameter of the key r005 is off, the operation information item Rx corresponding to the operation information parameter is not read from the shared memory 30 by the read / write unit 61 and is not included in the transmission message.

The initial value stored in the parameter storage unit 41 is off for all operation information parameters.

On the other hand, each control parameter defines the operation of the transmission unit 50 and the transmission data storage unit 60. The control parameters are a control parameter whose value can be turned on or off (control parameter of keys i000 to i105 in the example of FIG. 3) and a control parameter whose value can be a concrete numerical value or a concrete symbol (in the example of FIG. 3). It is roughly divided into control parameters of keys i200 to i205). Turning on the value of a control parameter means that the control item corresponding to that control parameter should be executed. Off the value of a control parameter means that the control item corresponding to that control parameter should not be executed. For example, if the value of the control parameter of key i000 is on, the transmission processing unit 52 includes the transmission date in the transmission message, and if the value of the control parameter of key i002 is off, the transmission processing unit 52 transmits. The message does not include the version information of the software on which the controller 4 operates.

Further, the control parameters of the keys i100 to i105 (control parameters whose value can be turned on or off) correspond to the control parameters of the keys i200 to i205 (control parameters whose value can be a specific numerical value or symbol), respectively. Specifically, the control parameter of the key i100 specifies whether the data format of the outgoing message is on (enabled) or off (disabled). If the control parameter is on, the transmission processing unit 52 generates a transmission message according to the data format specified by the value of the control parameter of the key i200. If the control parameter of the key i100 is on and the value of the control parameter of the key i200 is 0, the transmission processing unit 52 generates a transmission message according to JSON (registered trademark). If the control parameter of the key i100 is on and the value of the control parameter of the key i200 is 1, the transmission processing unit 52 generates a transmission message according to the comma-separated values (CSV) format.

The control parameter of key i101 specifies whether the transmission cycle timer of the outgoing message is on (enabled) or off (disabled). If the control parameter is on, the transmission processing unit 52 generates a transmission message and transmits it to the analyst computer 7B according to the transmission cycle value specified by the value of the control parameter of the key i201. The value of the control parameter of the key i201 can be specified up to 2678400 seconds (1 month (31 * 24 * 60 * 60 seconds)). In FIG. 3, 0.1 seconds is specified as the value of the control parameter of the key i201.

Instead of the transmission cycle of the transmission message, the transmission time may be specified by a control parameter. In this case, for example, the analyst computer 7B can receive the transmitted message at a time when the traffic is light or at a time convenient for the user of the analyst computer 7B.

The control parameter of key i102 specifies whether the upload cycle timer for the operation log file is on (enabled) or off (disabled). If the control parameter is on, the transmission processing unit 52 transmits or uploads the operation log file to the operation log file storage unit 8 according to the cycle value specified by the value of the control parameter of the key i202. The value of the control parameter of the key i202 can be specified up to 2678400 seconds (1 month (31 * 24 * 60 * 60 seconds)). In FIG. 3, 2678400 seconds is specified as the value of the control parameter of the key i202.

Instead of the operation log file upload cycle, the operation log file upload time may be specified by the control parameter. In this case, for example, the controller 4 can transmit the operation log file to the operation log file storage unit 8 at a time when the traffic is low.

The control parameter of key i103 specifies whether the destination IP address of the operation log file is on (enabled) or off (disabled). If the control parameter is on, the transmission processing unit 52 transmits the operation log file to the destination IP address of the operation log file storage unit 8 specified by the value of the control parameter of the key i203. The control parameter of key i104 specifies whether the destination port of the operation log file is on (enabled) or off (disabled). If the control parameter is on, the transmission processing unit 52 transmits the operation log file to the destination port of the operation log file storage unit 8 specified by the value of the control parameter of the key i204.

The transmission processing unit 52 may transmit an operation log file to a plurality of operation log file storage units 8. In this case, additional control parameters are used.

Further, the control parameter may have a destination information parameter indicating the analyst computer 7B and a control parameter for designating on (valid) or off (invalid) of the destination information parameter. In this case, the destination of the sent message can be arbitrarily specified. The transmission processing unit 52 may transmit a transmission message to a plurality of analysts computers 7B. In this case, the control parameter has a plurality of destination information parameters indicating each of the plurality of analyst computers 7B and a plurality of control parameters that specify on (enabled) or off (disabled) of those destination information parameters. May be good.

When any of the control parameters of the keys i100 and i101 is off, the transmission processing unit 52 does not generate or transmit a transmission message regardless of the value of the control parameters of the keys i200 and i201. Further, when any of the control parameters of the keys i102 to i104 is off, the transmission processing unit 52 does not generate an operation log file and does not transmit the operation log file regardless of the value of the control parameters of the keys i202 to i204.

The control parameter of the key i105 specifies on (valid) or off (invalid) of the read cycle timer from the shared memory 30. If the control parameter is on, the read / write unit 61 of the transmission data storage unit 60 reads the operation information item from the shared memory 30 according to the cycle value specified by the value of the control parameter of the key i205, and the ring buffer 62. Write to. In FIG. 3, 0.01 seconds is specified as the value of the control parameter of the key i205. When the control parameter of the key i105 is off, the read / write unit 61 of the transmission data storage unit 60 does not read the operation information item from the shared memory 30 and does not write it to the ring buffer 62 regardless of the value of the control parameter of the key i205. ..

The initial value stored in the parameter storage unit 41 is off for all control parameters whose values can be turned on or off. On the other hand, a predetermined initial value is stored in the parameter storage unit 41 for all control parameters whose value can be a specific numerical value or a specific symbol.

The parameter storage unit 41 may store other parameters in addition to the parameters shown in FIG. For example, the parameter storage unit 41 may store a control parameter that specifies whether or not to include a time stamp in the transmitted message.

<Information exchange between the administrator computer and the controller> FIG. 4 is a sequence diagram showing information exchange between the administrator computer 7A of the communication system and the controller 4. The administrator computer 7A can send a message including setting information to the controller 4 at a time desired by the user of the administrator computer 7A. In the controller 4, when the setting information transmission / reception unit 42 receives a message including the setting information, the parameter update unit 43 updates the parameters stored in the parameter storage unit 41 according to the setting information.

When the parameters stored in the parameter storage unit 41 are updated, the setting information transmission / reception unit 42 of the controller 4 functions as a reply information transmission unit and transmits the setting reply information to the administrator computer 7A. Each time the setting information is received, the controller 4 updates the parameter and sends the setting reply information to the administrator computer 7A.

FIG. 5 is a diagram showing an example of setting information transmitted from the administrator computer 7A to the controller 4. In the setting information, the key of the parameter to be set by the user of the administrator computer 7A and the value of the parameter are specified according to the key value of the parameter storage unit 41 which is the key value database. In the example of FIG. 5, for each parameter of the keys i000, i001, i100, i101, r000, r001, r002, r003, r004, r005, r200, r201, r202, r203, r204, r205, the key of the parameter and the key of the parameter are used. The value (on) of the parameter is included in the setting information. These parameters are parameters whose values can be turned on or off, and the initial value stored in the parameter storage unit 41 is off. For these parameters, when the user of the administrator computer 7A wants to switch on, a key may be specified and a value may be specified on in the setting information. In the parameter storage unit 41, the parameters of the keys i000, i001, i100, i101, r000, r001, r002, r003, r004, r005, r200, r201, r202, r203, r204, and r205 are switched on according to the setting information. Be done. When the user of the administrator computer 7A wants to maintain the initial value (off), neither the key nor the value of the parameter is specified in the setting information, so that the amount of setting information can be reduced.

For a parameter whose value can be turned on or off, if the user of the administrator computer 7A wants to switch it off again after switching it on, the key and value (value is off) pair of the parameter is included. The setting information may be transmitted by the administrator computer 7A to the controller 4. In this way, the degree of freedom of the control parameters to be enabled and the degree of freedom of the operation information items included in the transmitted message are increased.

In the example of FIG. 5, 1 (comma-separated format) is specified as a value for the control parameter (data format of the transmitted message) of the key i200. 0.066 seconds is specified as a value for the control parameter (cycle value of the transmission cycle timer of the transmission message) of the key i201. These control parameters are control parameters whose values can take a specific numerical value or a specific symbol, and a predetermined initial value is stored in the parameter storage unit 41. For these parameters, when the user of the administrator computer 7A wants to change from an existing value to a desired value, a key / value pair may be specified in the setting information. When the user of the administrator computer 7A wants to maintain the existing value, neither the key nor the value of the parameter is specified in the setting information, so that the amount of setting information can be reduced.

Once the setting information is transmitted, if the user of the administrator computer 7A wants to change a certain parameter, the administrator computer 7A can change the key and value of the parameter at the time desired by the user of the administrator computer 7A. A message including setting information including a set can be transmitted to the controller 4. The parameter update unit 43 updates the parameters stored in the parameter storage unit 41 according to the new setting information.

In the example of FIG. 5, the setting information includes the control parameter setting information instructing the update of the control parameter and the operation information setting information instructing the update of the operation information parameter. Here, the control parameters are the parameters of the keys i000, i001, i100, i101, i200, and i201. The operation information parameters are the parameters of the keys r200, r201, r202, r203, r204, and r205. However, the administrator computer 7A may send a message including only the control parameter setting information instructing the update of the control parameter. The control parameter setting information includes a set having the key of the control parameter and the value of the control parameter. Further, the administrator computer 7A may send a message including only the operation information setting information instructing the update of the operation information parameter. The operation information setting information includes a key and value (on or off) set of the operation information parameter.

As described above, the setting information of this embodiment includes a set of a key and a value of the parameter to be updated among the parameters stored in the parameter storage unit which is the key value database. Therefore, the setting information can be easily created as compared with the setting information in which the setting values of a large number of parameters are entered in a large number of predetermined fields. For example, in the setting information, the order of the parameters is variable, the number of parameters is not limited, and it is easy to add parameters. It is also easy to specify the parameters that should be turned off in the setting information.

Further, in this embodiment, it is possible to change the transmission cycle or transmission time of the transmission message, the upload cycle or upload time of the operation log file, and the reading cycle of the operation information from the shared memory 30 by the setting information. be. By changing the transmission cycle or transmission time of the transmission message, the transmission cycle or transmission time of the transmission message can be optimized. By changing the upload cycle or upload time of the operation log file, the upload cycle or upload time of the operation log file can be optimized. By changing the reading cycle of the operation information, the amount of transmitted messages generated from the operation information can be optimized.

Further, in this embodiment, the operation information item included in the transmitted message can be arbitrarily specified by the setting information. Therefore, the degree of freedom of the items to be transmitted is increased.

FIG. 6 is a diagram showing an example of setting reply information transmitted from the controller to the administrator computer. The setting reply information indicates all the parameters stored in the parameter storage unit 41. That is, in this embodiment, the setting reply information includes control parameter setting reply information for all control parameters stored in the parameter storage unit 41 and operation information for all operation information parameters stored in the parameter storage unit 41. Includes setting reply information.

As shown in FIG. 6, the setting reply information includes a set having a key of each control parameter and a value of the control parameter. Further, the setting reply information includes a set having a key of each operation information parameter and a value of the operation information parameter. The value of the operation information parameter is a value indicating whether or not the operation information item corresponding to the operation information parameter should be transmitted. The user of the administrator computer 7A confirms the status of all the control parameters stored in the parameter storage unit 41 and the status of all the operation information parameters stored in the parameter storage unit 41 by the setting reply information. be able to. Then, if necessary, the administrator computer 7A again transmits a message including the setting information to the controller 4.

<Information transmission from the controller> FIG. 7 is a sequence diagram showing information transmission from the controller 4 in the communication system 1 to the robot 2, the analyst computer 7B, and the operation log file storage unit 8.

As described above, the processor 21 of the controller 4 sequentially supplies a plurality of command values (operation information items) to the robot 2. The supply of the operation information item to the robot 2 is irrelevant to the above setting information.

The read / write unit 61 of the controller 4 reads the operation information item corresponding to the operation information parameter turned on in the setting information from the shared memory 30 in the read cycle corresponding to the read cycle timer turned on in the setting information. , Write to the ring buffer 62.

The transmission processing unit 52 of the controller 4 reads out the operation information item stored in the ring buffer at the transmission cycle corresponding to the transmission cycle timer turned on in the setting information or the transmission time turned on in the setting information. Subsequently, the transmission processing unit 52 generates a transmission message transmission message including the read operation information item and transmits it to the analyst computer 7B. Upon receiving the transmitted message, the analyst computer 7B stores the transmitted message in the message storage unit 9.

Further, the transmission processing unit 52 of the controller 4 generates an operation log file at the upload cycle corresponding to the upload cycle timer of the operation log file turned on in the setting information or the upload time turned on in the setting information, and operates. The log file is transmitted to the operation log file storage unit 8. As described above, the transmission processing unit 52 generates an operation log file by integrating or concatenating a plurality of provisional operation log files in the operation log file transmission cycle, and transmits the operation log file to the operation log file storage unit 8. do. Upon receiving the operation log file, the operation log file storage unit 8 stores the operation log file.

As described above, in this embodiment, the read cycle of the operation information item stored in the shared memory 30 and the transmission message including the operation information item are transmitted by the control parameter of the control parameter setting information received from the administrator computer 7A. It is possible to specify the transmission cycle or transmission time of. By specifying the transmission cycle or transmission time of the transmission message, the transmission cycle or transmission time of the transmission message transmitted from the controller 4 to the analyst computer 7B, and thus the traffic can be optimized. Further, the amount of transmitted messages can be optimized by designating the read cycle for reading the operation information from the shared memory 30.

FIG. 8 is a diagram showing an example of a transmission message transmitted from the controller 4 to the analyst computer 7B. The outgoing message contains a set with the key of the control parameter and the value of the control parameter. For example, in the example of FIG. 8, the set of "i001,232956789" means that the transmission time of the transmitted message is 23:29:56.789 seconds, i001 is the key, and 232956789 is the value. The transmitted message contains a set having the key of the operation information item and the value of the operation information item. For example, in the example of FIG. 8, the set of "r202, 2.096525" means that the command value of the joint J3 of the robot is 2.096525 degrees, r202 is the key, and 2.096525 is the value. In this way, by expressing each of the control parameter and the operation information item of the transmitted message with a key and a value, the content of the transmitted message can be easily understood.

FIG. 9 is a diagram showing an example of an operation log file transmitted from the controller 4 to the operation log file storage unit 8. The operation log file also contains the set having the key of the control parameter and the value of the control parameter, and also contains the set having the key of the operation information item and the value of the operation information item. Therefore, the contents of the operation log file can be easily understood. Further, in the example of FIG. 9, i000,20170620, i001,212956789, i000,20170620, i001,222956789, and i000,20170620, i001,232956789 are time stamps. These time stamps can be included in the provisional operation log file when the transmission processing unit 52 generates the provisional operation log file, and the transmission processing unit 52 concatenates a plurality of provisional operation log files to create an operation log file. It can be included in the operation log file when it is generated. The user of the communication system 1, for example, the user of the analyst computer 7B, can know the time of the operation information item in the operation log file by referring to the time stamp, and can analyze the operation information item in time series. As mentioned above, the time stamp can also be included in the outgoing message.

<Prevention of inconsistency of control parameters> Among the control parameters stored in the parameter storage unit 41 of the controller 4, there are control parameters that cannot be used unless the values of other control parameters are predetermined values in the parameter storage unit 41. .. For example, in the example of FIG. 3, if the value of the control parameter of key i100 is not on, the data format of the transmitted message cannot be specified, so the value of the control parameter of keys i000 to i002 or the value of the control parameter of key i101 is on. Even if there is, the outgoing message cannot be generated. Also, if the value of the control parameter of key i101 is not on, the transmission cycle of the transmitted message cannot be specified, so even if the value of the control parameter of keys i000 to i002 or the value of the control parameter of key i100 is on, the transmitted message Cannot be generated.

In order to avoid such parameter value inconsistencies, two measures are taken in this embodiment. One measure is that the administrator computer 7A pays attention to the user of the administrator computer 7A. Specifically, when the administrator computer 7A is performing the work for generating the setting information, it is assumed that the user gives an instruction to change the value of a certain control parameter to the administrator computer 7A. At this time, if the value of the control parameter is on, the administrator computer 7A may notify the user of another control parameter whose value should also be on in some form. For example, when the user gives an instruction to change the value of the control parameter of the key i000 to on to the administrator computer 7A, the administrator computer 7A uses that the value of the control parameter of the keys i100 and i101 should also be on. Inform the person.

Conversely, if the user gives an instruction to turn off the value of a control parameter to the administrator computer 7A, the administrator computer 7A will have some form of the effect of turning off the value of the control parameter. All you have to do is inform the user. For example, if the user instructs the administrator computer 7A to change the value of the control parameter of the key i101 to off, the administrator computer 7A tells the user on the display of the administrator computer 7A that the outgoing message will not be sent. Or you can ask the user on the display if the key i100 should also be turned off.

Another measure is that the controller 4 uses the setting reply information to pay attention to the user of the administrator computer 7A. Specifically, when the combination of the value of a certain control parameter specified in the setting information and the value of another control parameter stored in the parameter storage unit 41 is not a predetermined combination, the setting information transmission / reception unit 42 of the controller 4 is used. , Setting In the reply information, set the value of these control parameters to an invalid value. In this case, the parameter updating unit 43 may leave the values of these control parameters stored in the parameter storage unit 41 as invalid values or set them to invalid values.

For example, even if the setting information specifies that the control parameter of the key i000 is turned on, the control parameter of the key i000 cannot be used unless the value of the parameter of the keys i100 and i101 is turned on in the parameter storage unit 41. Therefore, when the value of the control parameter of the keys i100 and i101 is off in the parameter storage unit 41, the setting information transmission / reception unit 42 sets the value of the control parameter of the key i000 to off in the setting reply information. Further, the setting information transmission / reception unit 42 also sets the value of the parameter of the keys i100 and i101 to off in the setting reply information according to the storage of the parameter storage unit 41. The parameter update unit 43 may not update the value of the key i000 stored in the parameter storage unit 41 on according to the setting information, but leave it off. When the user of the administrator computer 7A notices the difference between the parameter setting information transmitted immediately before and the received control parameter setting reply information, the user notices the difference between the control parameter setting information and the new setting information in order to make the control parameters consistent with each other. Can be transmitted from the administrator computer 7A.

Further, for example, when the setting information specifies that the control parameter of the key i000 is turned off and the value of the control parameter of the keys i100 and i101 is turned on in the parameter storage unit 41, the setting information transmission / reception unit 42 sets. In the reply information, set the value of the control parameter of the keys i100 and i101 to off as well as the control parameter of the key i000. When the user of the administrator computer 7A notices the difference between the previously transmitted parameter setting information and the received control parameter setting reply information, the user notices a difference between the previously transmitted parameter setting information and the received control parameter setting reply information. Can be transmitted from the administrator computer 7A. The parameter update unit 43 may set the value of the control parameter of the key i000 stored in the parameter storage unit 41 to off, and may also set the value of the control parameter of the keys i100 and i101 to off.

<Management of Ring Buffer> FIG. 10 is a flowchart showing an example of an operation related to management of the ring buffer 62 in the controller 4. This operation is executed by the above-mentioned processor of the controller 4 according to the program.

In the controller 4 according to this embodiment, the read / write unit 61 reads the operation information items stored in the shared memory 30 in the read cycle and temporarily stores them in the ring buffer 62. The transmission processing unit 52 generates a transmission message including an operation information item stored in the ring buffer 62 in the transmission cycle or the transmission cycle, and transmits the transmission message to the analyst computer 7B. In this embodiment, by using the ring buffer 62, the read cycle of the operation information item stored in the shared memory 30 and the transmission cycle of the transmission message including the operation information item can be easily different.

The memory management unit 63 manages a write pointer indicating a write position of the ring buffer 62 and a read pointer indicating a read position, and whether or not there is a free area of the ring buffer 62 indicated as a difference between the pointer positions of the write pointer and the read pointer. Judge. Then, when the transmission processing unit 52 cannot transmit the transmission message, the read / write unit 61 writes the operation information item in the ring buffer 62 until the memory management unit 63 determines that there is no free area in the ring buffer 62. Therefore, in this embodiment, even if the transmission processing unit 52 cannot transmit the transmission message, it is possible to write the operation information item in the ring buffer 62 until the free space is exhausted. Therefore, even if the transmission message cannot be transmitted due to the communication failure, the operation information item is stored in the ring buffer 62, and the loss of the operation information item can be suppressed.

As shown in FIG. 10, in step St1, the read / write unit 61 reads the operation information item stored in the shared memory 30 and writes the operation information item in the ring buffer 62. At this time, the read / write unit 61 adds a time stamp to the operation information item and writes it to the ring buffer 62. By adding a time stamp to the operation information item written in the ring buffer 62, the transmission message generated from the operation information item can include the time stamp corresponding to the operation information item, and is generated from the operation information item. The failure operation log file can also include the time stamp corresponding to the operation information item. Next, in step St2, the memory management unit 63 updates the write pointer of the ring buffer 62.

After that, in step St3, the transmission processing unit 52 generates a provisional operation log file. The provisional operation log file includes the operation information item written in the ring buffer 62 in step St2 and the time stamp of the operation information item. Next, in step St4, the transmission processing unit 52 updates the provisional operation log file management information. The provisional operation log file management information is stored in a recording medium (not shown) in order to manage the provisional operation log file generated by the controller 4 but not transmitted to the operation log file storage unit 8. In step St4, the transmission processing unit 52 adds the name or ID of the provisional operation log file generated in the immediately preceding step St3 to the provisional operation log file management information. For the name or ID of the provisional operation log file, for example, the time stamp of the provisional operation log file is used.

Then, in step St5, the memory management unit 63 determines whether or not there is a free area in the ring buffer 62. Here, if it is determined that there is an empty area in the ring buffer 62, in step St6, the transmission processing unit 52 determines whether or not it is the transmission time or transmission cycle of the transmission message. If it is determined that it is the transmission time or the transmission cycle of the transmission message, the transmission processing unit 52 reads out the operation information item stored in the ring buffer 62 in step St7. In step St8, the transmission processing unit 52 generates a transmission message including the operation information, and transmits the transmission message to the analyst computer 7B.

Next, in step St9, the transmission processing unit 52 determines whether or not the transmission of the transmission message is completed within a predetermined period. This determination can be made, for example, based on whether or not the transmission processing unit 52 has received the reception confirmation notification from the analyst computer 7B. If the determination in step St9 is affirmative, that is, when the transmission of the transmission message is completed, in step St10, the read / write unit 61 erases the operation information item read from the ring buffer 62 in step St7. Next, in step St11, the memory management unit 63 updates the read pointer of the ring buffer 62.

Further, in step St12, the memory management unit 63 determines whether or not there is a free area in the ring buffer 62. Here, if it is determined that there is a free area in the ring buffer 62, the operation proceeds to step St13.

In step St13, the transmission processing unit 52 refers to the provisional operation log file management information. In step St14, the transmission processing unit 52 determines whether or not an untransmitted provisional operation log file is recorded in the provisional operation log file management information. If the determination in step St14 is affirmative, that is, if an untransmitted provisional operation log file is recorded in the provisional operation log file management information, in step St15, the transmission processing unit 52 transmits the operation log file. Determine if it is a time or transmission cycle. If the determination in step St15 is affirmative, that is, the transmission time or transmission cycle of the operation log file, in step St16, the transmission processing unit 52 generates an operation log file from the provisional operation log file, and the operation log is generated. The file is transmitted to the operation log file storage unit 8.

Next, in step St17, the transmission processing unit 52 determines whether or not the transmission of the operation log file is completed within a predetermined period. This determination can be made, for example, based on whether or not the transmission processing unit 52 has received the reception confirmation notification from the message storage unit 9. If the determination in step St17 is affirmative, that is, when the transmission of the operation log file is completed, the transmission processing unit 52 updates the provisional operation log file management information in step St18. Specifically, the transmission processing unit 52 deletes the name or ID of the provisional operation log file recorded in the provisional operation log file management information.

If the judgment in step St14 is negative, that is, if the provisional operation log file that has not been transmitted is not recorded in the provisional operation log file management information, the operation returns to step St1. If the judgment in step St15 is negative, that is, if it is not the transmission time of the operation log file, the operation returns to step St1.

In this way, unless a communication failure occurs in the network 10, the normal operation from step St1 to step St18 is repeated without interruption.

When the ring buffer 62 is used, the unread operation information item or the untransmitted operation information item is overwritten with a new operation information item in order to prevent the operation information item to be transmitted to the analyst computer 7B from disappearing. It is preferable not to do so. Therefore, in this embodiment, the following measures are adopted.

First, if the determination in step St5 is negative and the determination in step St12 is negative, that is, if there is no free space in the ring buffer 62, the operation proceeds to step St19. In step St19, the read / write unit 61 interrupts the writing of the operation information item to the ring buffer 62, and the operation then proceeds to step St6. If the determination in step St6 is affirmative, that is, the next transmission time or cycle of the transmission message, the operation proceeds to step St7. In step St7, the transmission processing unit 52 reads out the operation information items stored in the ring buffer 62. Next, in step St8, the transmission processing unit 52 generates a transmission message including the operation information, and transmits the transmission message to the analyst computer 7B.

When the transmission is completed, the determination in step St9 becomes affirmative, and the operation proceeds to step St10. In step St10, the read / write unit 61 erases the operation information item read from the ring buffer 62. This creates free space in the ring buffer 62. If no communication failure has occurred, or if the communication failure is restored, the read operation information item is deleted from the ring buffer 62, so that the determination in step St12 becomes affirmative. After that, in step St1, the read / write unit 61 can read the operation information item stored in the shared memory 30 and write the operation information item in the ring buffer 62. Further, it is prevented that the operation information item that has not been read is overwritten by the new operation information item in the ring buffer 62.

If the determination in step St9 is negative, that is, if the transmission of the transmitted message is not completed within a predetermined period, the operation proceeds to step St19. In step St19, the read / write unit 61 does not write the operation information item to the ring buffer 62, and the operation then proceeds to step St6. In this way, the operation information item that has not been transmitted is prevented from being overwritten by the new operation information item in the ring buffer 62.

If the communication failure is recovered and the determination in step St9 becomes affirmative after that, the normal operation is repeated. As described above, the transmitted message can be time-stamped with the operation information item. Therefore, even if the transmission of the transmitted message is significantly delayed, the user of the analyst computer 7B knows the time of the operation information item in the transmission message by referring to the time stamp, and sets the operation information item in the transmission message to the time. Series analysis can be performed and the analysis results can be used to investigate the cause of communication failure.

If the communication failure is not recovered, the transmission processing unit 52 does not transmit the transmission message to the analyst computer 7B, and the writing of the operation information to the ring buffer 62 remains interrupted. In this case, the ring buffer 62 stores the previously accumulated operation information items. Therefore, the user of the communication system 1, for example, the user of the analyst computer 7B, can read the operation information item stored in the ring buffer 62 and analyze the operation information item.

As described above, the operation information items stored in the ring buffer 62 are time-stamped. Therefore, the user of the communication system 1, for example, the user of the analyst computer 7B, obtains the operation information item stored in the ring buffer 62, refers to the time stamp, and refers to the operation information item stored in the ring buffer 62. It is possible to know the time, analyze the operation information items in time series, and use the analysis results to investigate the cause of the communication failure.

FIG. 11 is a flowchart showing another example of the operation related to the management of the ring buffer 62 executed by the above-mentioned processor of the controller 4 according to the program. The difference between the operation of FIG. 11 and the operation of FIG. 10 will be described.

If the determination in step St9 is negative, that is, if the transmission of the transmitted message is not completed within a predetermined period, the operation proceeds to step St20. In step St20, the transmission processing unit 52 retransmits the transmission message to the analyst computer 7B. Next, in step St21, the transmission processing unit 52 determines whether or not the transmission of the retransmitted transmission message is completed within a predetermined period. This determination can be made, for example, based on whether or not the transmission processing unit 52 has received the reception confirmation notification from the analyst computer 7B. If the determination in step St21 is affirmative, that is, when the transmission of the transmission message is completed, in step St10, the read / write unit 61 erases the operation information item read from the ring buffer 62 in step St7. Next, in step St11, the memory management unit 63 updates the read pointer of the ring buffer 62.

If the determination in step St21 is negative, that is, if the retransmitted transmission of the transmitted message is not completed within a predetermined period, the operation proceeds to step St22. In step St22, the transmission processing unit 52 reads out all the contents stored in the ring buffer 62, that is, all the operation information items at different times, and fails to include the operation information items stored in the ring buffer 62 over a plurality of times. Generate an operation log file. Next, in step St23, the transmission processing unit 52 transmits a failure operation log file to the failure operation log file storage unit 14. The failure operation log file storage unit 14 stores the received failure operation log file. In this way, the transmission processing unit 52 functions as a recording unit for recording the operation log file at the time of failure in the operation log file storage unit 14 at the time of failure.

Next, in step St24, the transmission processing unit 52 updates the failure operation log file management information. The failure operation log file management information is stored in a recording medium (not shown) in order to manage the failure operation log file generated by the controller 4 and transmitted to the failure operation log file storage unit 14. In step St24, the transmission processing unit 52 adds the name or ID of the provisional operation log file generated in the immediately preceding step St23 to the failure operation log file management information.

According to the operation of FIG. 11, when the communication failure is not recovered, the transmission processing unit 52 stores the operation log file at the time of failure including the operation information item previously stored in the ring buffer 62 in the operation log file storage unit at the time of failure. Record at 14. Therefore, the user of the communication system 1, for example, the user of the analyst computer 7B, can read the operation log file at the time of failure from the operation log file storage unit 14 at the time of failure and analyze the operation information item.

As described above, in the operation log file at the time of failure, the operation information item is time-stamped. Therefore, the user of the communication system 1, for example, the user of the analyst computer 7B, knows the time of the operation information item in the failure operation log file by referring to the time stamp, and analyzes and analyzes the operation information item in time series. The results can be used to determine the cause of the communication failure. In this case, the user of the communication system 1, for example, the user of the analyst computer 7B, is stored in the ring buffer 62 by analyzing the failure operation log file without visiting the place where the controller 4 is provided. You can grasp the contents.

<Modifications> Although the embodiments of the present invention have been described above, the above description does not limit the present invention, and various modifications including deletion, addition, and replacement of components within the technical scope of the present invention. An example is possible.

For example, in the above embodiment, the same cloud server 6 is provided with an administrator computer 7A, an analyst computer 7B, and an operation log file storage unit 8. However, they may be located in different domains or in different locations.

In the above embodiment, the administrator computer 7A is a computer different from the analyst computer 7B, but may be the same computer as the analyst computer 7B.

In the above embodiment, the controller 4 records the failure operation log file in the failure operation log file storage unit 14 via the network 10. However, each controller 4 may be provided with a dedicated failure operation log file storage unit, and the controller 4 may record the failure operation log file in the dedicated failure operation log file storage unit. Alternatively, the operation log file storage unit 14 at the time of failure may be provided in the cloud server 6.

In the above embodiment, the operation information item to be monitored is a command value supplied to the robot 2. However, the operation information item to be monitored may be a measured value measured by a sensor that monitors the robot 2.

In the above embodiment, the monitoring target is a robot, but it may be another object.

In the controller 4, each function executed by the processor may be executed by hardware instead of the processor, or may be executed by a programmable logic device such as FPGA (Field Programmable Gate Array) or DSP (Digital Signal Processor). You may.

1 Communication system 2 Robot (monitoring target) 4 Controller (information transmission device) 7A Administrator computer (first external information device) 7B Analyst computer (second external information device) 8 Operation log file storage unit 14 Operation at the time of failure Log file storage unit 30 Shared memory (operation information storage unit) 41 Parameter storage unit 42 Setting information transmission / reception unit (reception unit) 42 Setting information transmission / reception unit (reply information transmission unit) 43 Parameter update unit 52 Transmission processing unit (sending message generation unit) 52 Transmission processing unit (Transmission execution unit) 52 Transmission processing unit (Recording unit) 61 Read / write unit (Send message generation unit) 62 Ring buffer (Send message generation unit) 63 Memory management unit

Claims (13)

An operation information storage unit that stores multiple operation information items that indicate the operation status of the monitored object,
A parameter storage unit, which is a key-value database that stores a plurality of control parameters that control the transmission of the operation information item,
A receiving unit that receives a received message including control parameter setting information for setting the control parameter from the first external information device.
A parameter update unit that updates the control parameter stored in the parameter storage unit based on the control parameter setting information of the received message, and a parameter update unit.
A transmission message generation unit that generates a transmission message by reading the plurality of operation information items stored in the operation information storage unit in a read cycle specified by the control parameter.
A transmission execution unit for transmitting the transmission message generated by the transmission message generation unit to a second external information device at a transmission cycle or transmission time specified by the control parameter is provided.
The control parameter setting information includes a set having a control parameter key and a control parameter value.
The transmitted message includes a set having the key of each operation information item and the value of the operation information item.
When the control parameter setting information is received by the reception unit, the reception unit further includes a reply information transmission unit that transmits control parameter setting reply information for all control parameters to the first external information device.
The control parameter setting reply information includes a set having a key of each control parameter and a value of the control parameter.
The reply information transmitting unit sets the values of these control parameters to invalid values in the control parameter setting reply information when the combination of the values of the plurality of control parameters is not a predetermined combination. Transmitter. The information transmission device according to claim 1, wherein the read cycle is set separately from the cycle in which the transmission execution unit transmits the transmission message. The parameter storage unit is a plurality of operation information parameters corresponding to the plurality of operation information items stored in the operation information storage unit, and should each operation information parameter include the operation information item in the transmission message? Further memorize multiple operation information parameters indicating whether or not
The receiving unit receives from the first external information device operation information setting information that specifies an operation information item to be included in the transmission message among the plurality of operation information items stored in the operation information storage unit. death,
The parameter update unit updates the operation information parameter stored in the parameter storage unit based on the operation information setting information received by the reception unit.
The transmitted message generation unit is characterized in that it selects an operation information item specified in the operation information setting information from the plurality of operation information items stored in the operation information storage unit and generates a transmission message. The information transmission device according to claim 1 or 2. When the operation information setting information is received by the reception unit, the reception unit further includes a reply information transmission unit that transmits operation information setting reply information for all operation information parameters to the first external information device.
The operation information setting reply information includes a set having a key of each operation information parameter and a value of the operation information parameter, and whether or not the value of the operation information parameter should transmit an operation information item corresponding to the operation information parameter. The information transmission device according to claim 3, wherein the information transmission device is characterized by indicating the above. The plurality of control parameters have a destination information parameter indicating the second external information device.
The information transmission device according to any one of claims 1 to 4 , wherein the transmission message generation unit transmits the transmission message according to the destination information corresponding to the destination information parameter . The transmission execution unit comprises transmitting an operation log file in which time stamps are added to the plurality of operation information items stored in the operation information storage unit to the operation log file storage unit. The information transmission device according to any one of the items . The transmitted message generation unit
A read / write unit that reads out the plurality of operation information items stored in the operation information storage unit in the read cycle, and a read / write unit.
A ring buffer having a write pointer indicating a write position and a read pointer indicating a read position, and the read / write unit temporarily storing a plurality of operation information items in the read cycle.
One of claims 1 to 5, further comprising a transmission processing unit that generates a transmission message including the plurality of operation information items stored in the ring buffer at the transmission cycle or the transmission time. The information transmission device described in. Further, a memory management unit for determining whether or not there is an empty area of the ring buffer indicated as a difference between the pointer positions of the write pointer and the read pointer of the ring buffer is provided.
When the transmission execution unit cannot transmit the transmission message, the read / write unit writes the operation information item to the ring buffer until the memory management unit determines that there is no free area. The information transmission device according to claim 7 . The information transmission device according to claim 7, wherein the read / write unit assigns a time stamp to the operation information item and writes the time stamp to the ring buffer . When the memory management unit determines that there is no free area, the transmission processing unit reads the operation information item from the ring buffer to generate the transmission message, and the transmission execution unit outputs the transmission message to the first. When the transmission is transmitted to the external information device of No. 2 and the transmission of the transmission message by the transmission execution unit is completed, the read / write unit erases the operation information item from the ring buffer, and the memory management unit uses the read pointer. The information transmission device according to claim 8, wherein the information transmission device is updated . When the memory management unit determines that there is no free area and the transmission execution unit cannot transmit the transmission message, a failure operation log in which a time stamp is added to the operation information item stored in the ring buffer is added. The information transmission device according to claim 8 or 10, further comprising a recording unit for recording a file in an operation log file storage unit at the time of a failure . The information transmission device according to any one of claims 1 to 11.
With the first external information device
A communication system including the second external information device. An operation information storage unit that stores multiple operation information items that indicate the operation status of the monitored object,
A computer including a parameter storage unit which is a key-value database that stores a plurality of control parameters that control transmission of the operation information item.
A receiving unit that receives a received message including control parameter setting information for setting the control parameter from the first external information device.
A parameter update unit that updates the control parameters stored in the parameter storage unit based on the control parameter setting information of the received message, and a parameter update unit.
A transmission message generation unit that generates a transmission message by reading the plurality of operation information items stored in the operation information storage unit in a read cycle specified by the control parameter.
A program that functions as a transmission execution unit that transmits the transmission message generated by the transmission message generation unit to a second external information device at the transmission cycle or transmission time specified by the control parameter.
The control parameter setting information includes a set having a control parameter key and a control parameter value.
The transmitted message includes a set having a key of each operation information item and a value of the operation information item.
When the control parameter setting information is received by the reception unit, the reception unit further includes a reply information transmission unit that transmits control parameter setting reply information for all control parameters to the first external information device.
The control parameter setting reply information includes a set having a key of each control parameter and a value of the control parameter.
The reply information transmitting unit is a program characterized in that when the combination of values of a plurality of control parameters is not a predetermined combination, the values of these control parameters are set to invalid values in the control parameter setting reply information. ..

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