JP2008177796A - Saved-wiring system, its master communication equipment, its program, and display control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display an address and various kinds of error information using a 2-digit 7-segment display part as it is. <P>SOLUTION: A communication control part 25 successively and time-sequentially (at the interval of 1 second for instance) switches and displays the address and two or more kinds of error information for each slave device on a 2-digit 7-segment display LED 23. At the time, the error information may be displayed in one of the two digits and information indicating the kind of the displayed error information may be displayed in the other digit. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a master communication device for a wiring saving system.

15A and 15B show system configuration diagrams of a conventional wiring saving system.
FIG. 15A shows a form in which the master communication device is added to the control device (referred to as a communication module type), and FIG. 15B shows that the master communication device is connected to the control device via the host network. The form (called gateway type) is shown.

  In the communication module type wiring-saving system shown in FIG. 15A, the control device 5 and a large number of slave devices 2 are connected to the wiring-saving network 1. The control device 5 is a device in which the CPU 4 and the master communication device 3 are directly connected. The wire-saving network 1 is, for example, an AS-i network that is an open network that realizes bit-level wire-saving. Here, AS-i is an Actuator-Sensor-Interface, and the AS-i network is a well-known open wiring-saving network. In particular, in a PLC (programmable controller), each I / O module and various sensors / It is applied to the part where the actuator is connected. In the AS-i network, for example, one master device and a large number of slave devices are connected by a single cable (integrated power line and communication line) to reduce wiring.

  The slave device 2 can be connected to the wire-saving network 1 from 1 to N shown in the figure, and this N is the maximum number that can be connected. The (N) slave devices 2 are not connected to the network 1. Although not shown, each slave device 2 can be connected to one or a plurality of external input / output devices (for example, sensors and control devices). For example, a monitoring program is registered in the CPU 4, and the CPU 4 communicates with the master communication device 3 according to an instruction from the monitoring program, and the master communication device 3 transmits an arbitrary slave device 2 via the wiring-saving network 1. Select to communicate.

  Further, the gateway type wiring-saving system shown in FIG. 15B includes a host control device 6, a host network 9, a master communication device 10, a wire-saving network 1, and a large number of slave devices 2. . The host control device 6 is a communication module type device in which a CPU 7 and a host network communication module 8 are connected. The master communication device 10 is a gateway-type device that is connected to the host network 9 and the wire-saving network 1 through an intermediary connection. The wire-saving network 1 and the slave device 2 are the same as in FIG. 15A, and are given the same reference numerals.

  For example, a monitoring program is registered in the CPU 7, and the CPU 7 communicates with the master communication device 10 via the higher-level network communication module 8 according to an instruction from the monitoring program, and the master communication device 10 passes through the wiring-saving network 1. Then, an arbitrary slave device 2 is selected to perform communication.

  Conventionally, when a slave device causes consecutive errors multiple times, the master communication device determines that the slave device has failed and stops communication with the slave device. In order to display the address of the slave device, a 2-digit 7-segment display LED is used. Since the number of slave devices was limited, a 7-digit display LED with 2 digits was usually sufficient, but there were cases where it was not possible to display with 2 digits.

  Here, for example, a technique described in Patent Document 1 is known as a related art having a configuration in which information related to each slave device is displayed by a 7-segment display LED in connection with the above-described wiring saving system such as AS-i.

In the invention of Patent Document 1, in a master communication device provided with a display unit having only two digits in an 8-segment system, such a display unit is used as it is to distinguish a standard slave device, an extended A slave device, and an extended B slave device. In order to display each address, as shown in FIG. 6 and the like, an address and an alphabet indicating an extended A / B slave are switched and displayed in time series.
JP 2005-94332 A

  When a slave device fails, it is not sufficient as information to display only its address, and there is a demand for displaying various error information. Therefore, to know the error information, it was necessary to connect a dedicated communication analysis tool, but it was difficult to permanently install a dedicated analysis tool on site because a reduced wiring system was installed. One by one, it took time and effort to connect a dedicated analysis tool. For this reason, there is a demand for immediately and simply knowing the error status on site without connecting the dedicated analysis tool and displaying the error information. In particular, in the master communication apparatus provided with a display unit having only two digits in the 7-segment method as in the invention of Patent Document 1, a request to display various error information using such a display unit as it is. There is. However, with only two digits, the number of digits is insufficient to display various error information on the display section for communication errors and the like.

  For this reason, it may be possible to display a large number of digits using a liquid crystal display or the like, but the cost is very high compared to the 7-segment method, and the display unit of the existing master communication device is replaced with a liquid crystal display or the like. If it is remodeled, it will take more cost and time. This is the same when remodeling to increase the number of digits in the 7-segment method, and there is also a device that does not take up space for it even if you want to increase the number of digits. The girder is large), and a large remodeling is required to enlarge the outer shape.

  Therefore, as described above, in a master communication device provided with a display unit having only two digits in the 7-segment method, such a display unit can be used as it is (or with only slight modifications) to display various error information. Is desired. Also, when various information is sequentially displayed, it is difficult to understand what information is currently displayed. In addition, it takes time and effort to display various error information for each of a large number of slave devices by instructing them with a switch or the like. Further, it is not always necessary to display information of all slave devices. It is hoped that this can respond to requests.

  An object of the present invention is to provide a master communication device provided with a two-digit 7-segment display unit, and the master itself can easily provide detailed communication status without stress in the field in a short time without increasing the cost and increasing the outer shape. It is to provide a master communication device, a program, and the like of a wiring-saving system that can be confirmed.

The master communication device of the present invention is the master communication device including a two-digit 7-segment display unit in a wire-saving system in which a master communication device and a plurality of slave devices are connected to a wire-saving network, and each slave A plurality of types of error information storage means for communicating with a device via the wire-saving network and storing a plurality of types of error information calculated based on the communication in association with addresses of the respective slave devices, and an error information display instruction Accordingly, when the error information is displayed on the 2-digit 7-segment display unit, the address and the plurality of types of error information are sequentially displayed in time series on the 2-digit 7-segment display unit for each slave device. Error information display control means for switching display.

In the master communication device, it is possible to display not only the address but also various error information for each slave device by using the 7-segment display unit having only two digits as it is.
For example, when the error information display control means displays the plurality of types of error information on the two-digit 7-segment display section, the error information is displayed in one of the digits and the error information is displayed in the other digit. Displays information indicating the type.

Thereby, the user can know the type of error currently displayed.
Also, for example, the error information display control means may identify the address or the plurality of types of error information regarding any slave device among the slave devices while displaying the two-digit 7-segment display unit. When the instruction / operation is performed, the display related to the slave device is stopped and the display shifts to the display related to the next slave device.

  As a result, the user can display only error information related to the slave device he / she wants to know, for example, by performing manual instructions, and can skip display of unnecessary information, which is necessary in a short time. It becomes possible to know information.

In addition, as in the first example and the second example described below, the master communication device can automatically skip display of unnecessary data.
In the first example, the error information display control means refers to a connection list indicating whether or not each of the slave devices is connected, and does not display the error information for the slave devices that are not connected. .

In a second example, the error information display control means does not display the error information for a slave device in which all of the plurality of types of error information are free of errors.
The plurality of types of error information are, for example, a continuous error count, an error count integrated value, and a configuration abnormality integrated value, but are not limited to such an example.

  A second master communication device of the present invention is the master communication device including a two-digit 7-segment display unit in a wire-saving system in which a master communication device and a plurality of slave devices are connected to a wire-saving network. In addition, a bar graph LED is provided in the vicinity of the two-digit 7-segment display unit, communicates with each of the slave devices via the wire-saving network, and a plurality of types of error information calculated based on the communication are obtained for each slave. A plurality of types of error information storage means for storing in association with the address of the device, and when the error information is displayed on the 2-digit 7-segment display unit in response to an error information display instruction, the slave device sequentially receives the address. And the plurality of types of error information are sequentially displayed on the 2-digit 7-segment display section in time series, and the 2-digit 7 When the segment display unit displaying the error information, and a second error information display control means for displaying information indicating the type of error information being the display on the bar graph LED.

  In the second master communication device, not only the address but also various error information can be displayed for each slave device with only a slight modification of providing a bar graph LED, and the 2-digit 7-segment display section. When the error information is being displayed, information indicating the type of the displayed error information is displayed on the bar graph LED, so that all two digits can be used for displaying the error information.

  Further, any one of the plurality of types of error information is displayed on the bar graph LED when the address is displayed on the two-digit 7-segment display unit, thereby reducing the number of display times. Can do.

  Further, the present invention is not limited to the form of the above apparatus, and may be a program for causing the apparatus to execute functions of various means in the apparatus or a form of a display control method.

  According to the master communication device, the program, and the like of the wiring-saving system of the present invention, in the master communication device provided with the two-digit 7-segment display unit, the master itself can be shortened on-site without increasing the cost or increasing the outer shape. It becomes possible to easily confirm the detailed communication status without time stress.

Embodiments of the present invention will be described below with reference to the drawings.
In the present embodiment, basically, the wiring-saving system configuration shown in FIG. 15 (a) or 15 (b) is assumed, and therefore FIG. 15 (a) and FIG. 15 (b) are also used. It may be described with reference to it.

FIG. 1 shows a configuration example of a master communication device in the wiring-saving system of this example.
The illustrated master communication device may be any of the communication module type master communication device 3 and the gateway type master communication device 10 described above.

  The master communication device 20 in the illustrated example includes switches 21 and 22, a 7-segment display LED 23, an interface unit 24, a communication control unit 25, a storage unit 26, and a communication unit 27. The communication unit 27 includes an interface unit 31, a communication control unit 32, a transmission / reception unit 33, and a storage unit 34.

  The interface unit 24 is connected to the CPU 4 in the communication module type, and connected to the upper network 9 in the gateway type, and communicates with the upper network communication module 8 via the upper network 9. Yes.

  The user depresses the switch 21 or the switch 22 to input a desired instruction or make an arbitrary setting. For example, the switch 21 is a push button switch serving as a trigger for causing the communication control unit 25 to store information such as the address and ID code of the connected slave device. The switch 22 is a push button switch for instructing the user to start displaying error information by, for example, a long press (press for 5 seconds) described later.

  The 7-segment display LED 23 has a configuration of only two digits as shown in the figure. As described above, in this method, such an existing configuration is used as it is (or only with slight modifications), and a large number of slave devices are used. It is possible to display various error information related to. Details will be described later.

The communication control unit 25 (a processor such as a microcomputer (CPU or the like)) operates the switches 21 and 22 in addition to the communication control function of communicating with the external CPU 4 and the communication module 8 via the interface unit 24. And a function of executing various processes according to the instruction / setting and a function of performing display control of the 7-segment display LED 23. For example, when various types of error information, which will be described later, are displayed on the two-digit 7-segment display LED 23 according to an error information display instruction, the addresses and the types of error information are sequentially time-sequentially for each slave device. 2 has a processing function of switching and displaying on a 2-digit 7-segment display LED 23. These functions are realized, for example, by executing a program stored in a memory or the like (not shown) built in the communication control unit 25. For example, the program may be stored in the storage unit 26 without being limited to this example.

  The storage unit 26 stores error information such as a communication error detailed information list 50, which will be described later, and the communication control unit 25 displays and updates these various types of error information as necessary. That is, the master communication device communicates with each slave device via the wire-saving network 1, and stores a plurality of types of error information calculated based on the communication in the storage unit 26 in association with the address of each slave device. . The storage unit 26 also stores a slave configuration information list 60 described later.

The communication unit 27 is a unit for communication with a slave device that communicates with each slave device via the wiring-saving network 1 in accordance with, for example, a command from the communication control unit 25.
FIG. 2 shows a configuration example of the slave device 2 (40) in the wiring-saving system of this example.

  The slave device 40 (2) in the illustrated example includes a transmission / reception unit 41, an input / output unit 42, and a storage unit 43. The slave device 40 may have an existing configuration, and although not specifically described in detail, the transmission / reception unit 41 is a functional unit that communicates with the communication unit 27 by connecting to the wire-saving network 1, and an input / output unit Reference numeral 41 denotes a functional unit that is connected to various devices to be controlled and collects status data and sets / changes parameters. Various setting data are stored in the storage unit 43. For example, an address for determining whether the input / output data is addressed to its own address when communicating with the master communication device is stored.

  Also, the communication unit 27 itself shown in FIG. 1 may have an existing configuration and will not be described in detail. However, if briefly described, the transmission / reception unit 33 is connected to the wire-saving network 1. The communication control unit 32 communicates with each slave device 40 via the transmission / reception unit 33. Further, the communication control unit 32 performs data transmission / reception with the communication control unit 25 side via the interface unit 31. The storage unit 34 stores lists 50, 60 and the like which will be described later.

  The communication control unit 32 (a processor such as a microcomputer (CPU or the like)) performs, for example, the processing shown in FIG. 3 by executing a program stored in the built-in memory, for example. This program may be stored in the storage unit 34. In this case, the communication control unit 32 reads the program from the storage unit 34 and executes it.

FIG. 3 is a flowchart showing processing of the communication control unit 32 of the communication unit 27.
In the figure, the communication control unit 32 performs communication processing with the transmission / reception unit 41 of any n-th slave device 40 (step S11), and when a communication error occurs (step S12, YES), the processing of step S13 Proceed to If no communication error has occurred (NO in step S12), the process returns to step S11 to perform communication processing with the next slave device 40. That is, although not shown, when step S12 is NO, for example, the process of n = n + 1 is performed and the process returns to the process of step S11 (the initial value of n is “1”). Also, although not shown in the figure, if the determination in step S12 is YES, the retry process is repeated until normal communication can be performed, and the number of communication errors that occur until normal communication can be performed (continuous communication). Since this may result in an error, this is called the number of consecutive errors. (If it is only once, it is called a non-continuous error) and the number of errors is temporarily stored in a memory or the like. The process proceeds to step S13.

In step S13, it is determined with reference to the communication error detailed information list 50 whether or not the maximum value of the continuous error count should be updated.
An example of the communication error detailed information list 50 is shown in FIG. In the illustrated example, the communication error detailed information list 50 includes data items of an address 51, a maximum number of consecutive errors 52, an integrated value 53 of errors, and a number 54 of occurrence of a configuration error.

  The address 51 is an address assigned to each slave 40 on the wire-saving network 1. The “slave device whose address 51 is n” is synonymous with the “n-th slave device”.

  The maximum number of consecutive errors 52 is the maximum value of the number of consecutive errors so far in communication with the “nth slave”. Therefore, in the process of step S13, if the number of errors temporarily stored in the memory or the like is larger than the maximum number 52 of consecutive errors, the determination is YES (step S13, YES), and the memory is temporarily stored. An update process is performed in which the number of errors stored in the above is set to a new maximum number 52 of consecutive errors (step S14). After that, before the process of step S15, the number of errors temporarily stored in the memory or the like is reset to '0'.

  The error integration value 53 is the total number of communication errors that have occurred so far (cumulative value) in communication with the “slave at address n”, and every time the determination in step S12 becomes YES, The number of errors stored in the memory or the like (can be continuous or non-consecutive (only once); therefore, the integrated value 53 of errors includes all the numbers of errors regardless of continuous or non-consecutive) By adding to the integrated value 53, a new error integrated value 53 is calculated and stored (step S15).

  Subsequently, in the process of step S16, it is determined whether or not to update the number 54 of times that the configuration abnormality corresponding to the n-th slave device has been reached (step S16). ) The number 54 of the configuration abnormality is updated (calculated configuration abnormality number integrated value is stored in the list 50) (step S17).

  "Configuration error" here means that when the number of consecutive errors reaches the specified value, the master device stops communication of input / output data with the communication destination slave device as the configuration error slave at this time. To do. After that, when communication can be performed normally, input / output data communication is resumed. The number 54 of occurrence of the configuration abnormality means the number of times the configuration abnormality has occurred from a state that is not a configuration abnormality. If FIG. 11 in Patent Document 1 is taken as an example, the number of times the illustrated configuration abnormality information has changed from 0 to 1 corresponds to the number of times 54 the configuration abnormality has been reached. Note that FIG. 11 in Patent Document 1 may be used instead of the list 60 described later.

  The communication error detailed information list 50 is stored in both the storage unit 34 and the storage unit 26, and basically both have the same contents. However, since only the list 50 stored in the storage unit 34 is referred to / updated in the process of FIG. 3, the contents of both are different although they are temporary, but are the same again by the process of FIG. 5B described later. It is trying to become. The same applies to the slave configuration information list 60.

  The storage unit 26 and the storage unit 34 also store a “slave configuration information list” 60 shown in FIG. The “slave configuration information list” 60 includes an address 61 and a connection status 62. The address 61 is the same as the address 51 described above, and the connection status 62 of each “slave device at address n” is stored. In the connection status 62, “1” means “connected” and “0” means “not connected”.

Since not all addresses are used for reasons such as future expansion, the user who uses this system in advance, for example, the user operates the switch 21 to change the slave information to be used. It is set in the configuration information list 60. Alternatively, when it is desired to omit this work, a list of slaves (not shown) that are actually connected and communicating with the master may be used instead.

  The various error information shown in the communication error detailed information list 50 is only an example, and is not limited to these examples. The types of error information are not limited to three, but are four or more. Can also be displayed.

FIG. 5A is a flowchart showing the overall processing of the communication control unit 25.
The communication control unit 25 executes the process of FIG. 5A periodically, for example, as a periodic process.
In the figure, first, data transmission / reception processing with the CPU 4 or the host control device 6 is performed via the interface unit 24 (step S21), and then data transmission / reception processing with the communication unit 27 is performed via the interface unit 31. Execute (Step S22). Furthermore, if there is another periodic processing, this is executed (step S23). As the process of step S23, any one of the processes shown in FIGS. 5B, 6A, 6B, 7, 9, 9, and 13 described later is executed. 5A, 5B, 6A, 6B, 7, 9, 11, and 13 are all executed by the communication control unit 25. Yes, as described above, it is realized by executing a program in the built-in memory.

FIG. 5B is a flowchart showing the list update process of the communication control unit 25.
This processing is executed as the periodic processing in step S23 as described above. However, the processing is not limited to this example, and may be executed as periodic processing other than that shown in FIG. Good.

  In FIG. 5B, the status information of the communication unit 27 is received via the interface unit 31 (step S31), and the status information includes information indicating that the communication error detailed information list 50 has been updated. In this case (step S32, YES), for example, the communication error detailed information list 50 currently stored in the storage unit 26 is deleted and stored in the storage unit 34 of the communication unit 27 via the interface unit 31. The communication error detailed information list 50 is acquired and stored in the storage unit 26 (step S33).

  FIG. 6A is a processing example of the periodic processing in step S23 when the switch 22 is pressed. Note that this process may also be called by an interrupt, as in the process of FIG.

  For example, when the switch 22 is pressed for a long time (for example, pressed for 5 seconds or more) at the start of the periodic processing (step S41, YES), the “switch 22 processing status” is set to “1” (step S42). The initial value “1” is set to the display slave address n (step S43), the display timer is started (step S44), and the “display timer up status” is set to “0” (step S45).

  The above is the periodic processing (step S23) immediately after the switch 22 is pressed for a long time (for example, pressed for 5 seconds or more). As the subsequent periodic processing, processing such as FIG. 7 is executed. When the display timer expires, the timer interrupt process shown in FIG. 6B is executed. That is, when the display timer expires (step S51, YES), the “display timer up status” is set to “1” (step S52). Note that the display timer is, for example, a 1-second timer, and is timed up 1 second after activation. In this case, display of address or error information, which will be described later, is switched almost every second.

FIG. 7 is a flowchart of the error display process according to the first embodiment.
Note that, as described above, the processing of FIG. 7 may be performed by interrupt processing in addition to the periodic processing, but in the following description, the case of performing the periodic processing is taken as an example. Therefore, the process of FIG. 7 is periodically executed as the process of step S23.

  In FIG. 7, the determination processing in steps S61, S62, S68, S74, and S80 refers to the value of the “switch 22 processing status” and determines whether the value matches each condition. This is a process for performing the determination.

  The meaning of the value of “switch 22 processing status” is as shown in the lower right on the upper side of FIG. In other words, the value of “switch 22 processing status” is “0” for no display, “1” for “address” display, “2” for “continuous error count maximum value” display, and “3”. If “',“ error count integrated value ”is displayed, and“ 4 ”means“ configuration abnormality count integrated value ”is displayed.

  First, in the process of step S61, it is determined whether the “switch 22 processing status” is “0”. If the switch 22 has not been pressed for 5 seconds or more, the “switch 22 processing status” remains at the initial value “0”, so the determination in step S61 is YES, and in this case, this processing is terminated as it is (error (There is no instruction to display information) If the switch 22 has been pressed for 5 seconds or longer, the “switch 22 processing status” is set to “1” by at least the process of step S42, and thereafter, other than “0” by the process of step S67 and the like. Since the value has been updated, the determination in step S61 is NO.

  Subsequently, it is determined whether or not the “switch 22 processing status” is “1” (step S62). If this processing is processing immediately after the switch 22 is pressed for 5 seconds or longer, “switch 22 processing status” = “1” by the processing in step S42, and in that case (YES in step S62). The process proceeds to step S63. Alternatively, when the process of step S85 described later is executed in an arbitrary periodic process, the determination in step S62 is YES in the subsequent periodic process.

If the determination in step S62 is no, that is, if the “switch 22 processing status” is any of “2”, “3”, and “4”, the process proceeds to step S68.
In step S63, the address of the nth slave device is displayed on the 7-segment display LED 23. In this example, the value of n is simply displayed. If this process is a process immediately after the switch 22 is pressed for 5 seconds or more, n = 1 is set by the process of step S43, so that the address “01” is displayed as shown in the upper left of FIG.

  FIG. 8 is an example of transition of the display content of the 7-segment display LED 23 by the processing of FIG. 7, and the display content transitions as the processing of FIG. 7 is repeated many times as the periodic processing. Here, the display content transition of the first slave device will be described as an example, and will be described with reference to the uppermost row in FIG. As shown in FIG. 8, there are four types of display contents per slave device, and the transition is made in the order of (a) address → (b) continuous error → (c) error integrated value → (d) configuration abnormality integrated value, d) After displaying the configuration abnormality integrated value, the (a) address of the next slave device is displayed. Similarly for the next slave device, four types of display (address + three types of error information) are sequentially performed.

Following the processing in step S63, it is determined whether the “display timer up status” is “1” (step S64). That is, it is determined whether the display timer is up. If this process is a process immediately after the switch 22 is pressed for 5 seconds or longer, first, "display timer up status" = '0' is obtained by the process of step S45.
Thereafter, if the process of step S52 has been performed by the time of the process of step S64, the determination in step S64 is YES, and the process proceeds to step S65. Alternatively, after the process for starting the display timer is performed as in step S83 described later, the process in step S52 is performed after the display timer is timed up, and then the process in step S64 is performed. Even in this case, the determination in step S64 is YES.

  On the other hand, if the “display timer up status” is “0” (step S64, NO), the process proceeds to step S68. In this case, since the “display timer up status” remains “1”, step S68 described later is performed. , S74, S80 are all NO, and the process of FIG. 7 ends. Of course, in the next process of FIG. 7, the determination in step S61 is NO, the determination in step S62 is YES, the display content in step S63 remains unchanged, and the determination in step S64 is performed again.

Note that the period of the fixed cycle process is, for example, 0.1 seconds, and in this example, the process of FIG. 7 is executed every 0.1 second.
If the determination in step S64 is YES, the display timer has already expired, and the display timer is restarted (step S65). Then, “display timer up status” is reset to “0” (step S66), and “switch 22 processing status” is set to “2” (step S67), and the process proceeds to the determination process of step S68. In this case, the determination in step S68 is YES. That is, in step S68, since it is determined whether or not the “switch 22 processing status” is “2”, the processing in step S67 is performed and the “switch 22 processing status” is not updated thereafter. In step S68, the determination in step S68 is YES, and the process proceeds to step S69.

  In step S69, the “maximum value of the number of consecutive errors” of the nth slave device is displayed. At this time, a symbol indicating that this display is “the maximum number of consecutive errors” is also displayed. As an example, the symbol L is displayed together as shown in FIG. Accordingly, the display of “L0” shown in the figure is a display that means that “the maximum number of consecutive errors” is “0”. The value of “maximum number of consecutive errors” is obtained by displaying the maximum number 52 of consecutive errors corresponding to the address n from the communication error detailed information list 50 and is displayed. Therefore, “0” is displayed as described above. Here, (a) address and (c) error integrated value are not displayed because the two-digit display may be necessary. You may make it display.

  Then, it is determined whether the “display timer up status” is “1” (step S70). When this determination is made after the processing of step S52 is performed after the display timer is started in step S65 (here, when one second or more has elapsed after the display timer is started in step S65), step S70 is performed. This determination is YES.

  On the other hand, if the determination in step S70 is NO, the process proceeds to step S74. However, since “display timer up status” remains “2”, the determinations in steps S74 and S80 described later are both NO. The process of No. 7 ends.

If the determination in step S70 is YES, the display timer is restarted (step S71), the “display timer up status” is reset to “0” (step S72), and “switch 22 processing status” = “3” is set (step S73), and the process proceeds to the determination process of step S74. In this case, the determination in step S74 is YES. That is, in step S74, since it is determined whether or not the “switch 22 processing status” is “3”, the processing in step S73 is performed and the “switch 22 processing status” is not updated thereafter. In step S74, the determination in step S74 is YES, and the process proceeds to step S75.

  In step S75, the “error count integrated value” of the nth slave device is displayed. This “error count integrated value” is obtained by displaying the error integrated value 53 corresponding to the address n from the communication error detailed information list 50 and displaying it. FIG. 8C shows an error integrated value column. Is displayed. Since n = 1 at the beginning, “00” is displayed as shown in FIG.

  Then, as in the examples described in step S64 and step S70, it is determined whether the “display timer up status” is “1” (step S76). If it is “1” (YES in step S76). ), The display timer is restarted (step S77), the “display timer up status” is reset to “0” (step S78), and “switch 22 processing status” is set to “4” (step S78). Step S79) and the process proceeds to the determination process of Step S80. In this case, the determination in step S80 is YES. Then, the “number of times the configuration error has been reached” 54 (configuration error integrated value) corresponding to the address n is acquired from the communication error detailed information list 50 and displayed on the 7-segment display LED 23 (step S81). At this time, a symbol indicating that this display is a display of a configuration abnormality integrated value is also displayed. In the example of FIG. 8, the symbol C is displayed together as shown in the (d) configuration abnormality integrated value. Therefore, for example, the display of “C0” in the figure means that the configuration abnormality integrated value is “0”.

  Then, as in step S64 and the like, it is determined whether the “display timer up status” is “1” (step S82). If it is “1” (step S82, YES), the display timer is set. The process is restarted (step S83), and “display timer up status” is reset to “0” (step S84), and “switch 22 processing status” is set to “1” (step S85). Further, n is incremented by +1 (n = n + 1) (step S86). As a result, in the subsequent periodic processing (the processing of FIG. 7), the same error display processing as described above is performed for the next slave device. However, if n> N (N: maximum number of slave devices), that is, if error display processing has been performed for all slave devices (YES in step S87), “switch 22 processing status” = '0 Is set to '(step S88), the 7-segment display LED 23 is turned off (step S89), and all the error display processing in response to pressing of the switch 22 for 5 seconds is completed.

Next, Example 2 will be described below.
FIG. 9 is a flowchart of error display processing according to the second embodiment.
The process of FIG. 9 is performed after the switch 22 is pressed for 5 seconds and before the processes of steps S88 and S89 are executed, for example, every time the switch 22 is pressed (in this case, pressed once (shortly pressed)). This process is called by interrupt processing. That is, in the second embodiment, similarly to the first embodiment, the processing of FIG. 7 is repeatedly executed at regular intervals, and the interrupt processing shown in FIG. 9 is further executed.

  In FIG. 9, when the switch 22 is pressed once as described above (step S91, YES), the “switch 22 processing status” is one of “1”, “2”, “3”, and “4”. If this is the case (that is, when any information is being displayed) (step S92, YES), “switch 22 processing status” is set to “1” (step S93), and n is incremented by +1. (N = n + 1) (step S95). However, before this, if n = N (N: the maximum number of slave devices) (step S94, YES), this process is terminated. In the case of executing the process of FIG. 9, the process of FIG. 7 in the current periodic process may be forcibly terminated.

A display example by the processing of the second embodiment is shown in FIG.
The example shown in FIG. 10 is a display example when the user wants to know the error information of the slave devices at addresses 3 and 5 (in other words, the error information of the slave devices at addresses 1, 2, and 4 needs to be known). Since there is no error, if these error information is displayed, it takes time and is annoying).

  In the example illustrated in FIG. 10, the user first presses the switch 22 once while the “address” of the first slave device is displayed. As a result, the processing of FIG. 9 is executed, and n = 2 and “switch 22 processing status” = “1”. Therefore, as shown in FIG. The “settlement value, configuration abnormality accumulated value)” is not displayed, but the “address” of the second slave device is displayed.

  Furthermore, when the switch 22 is pressed once by the user while the “address” of the second slave device is displayed, the processing of FIG. 9 is executed, and n = 3, “switch 22 processing status” = ' Since it is 1 ', the “address” of the third slave device is displayed without displaying various error information related to the second slave device.

  In this example, since the user does not operate the switch 22 while the “address” of the third slave device and various error information are displayed, the processing of FIG. 7 is repeatedly executed. Various error information regarding the slave devices are sequentially displayed. Further, after that, the “address” of the fourth slave device is displayed.

The fourth and fifth slave devices are not specifically described.
As described above, in the second embodiment, the user can see only the error information of the slave device that he / she wants to see and can skip the error information display of the slave device which does not need to be seen. You can refer to error information without taking any action.

Next, Example 3 will be described below.
In the second embodiment described above, the error information display of the desired slave device is skipped in accordance with the user's instruction / operation. However, in the third embodiment, the error information display of the specific slave device is skipped automatically. . Here, in particular, a slave device in which no error or configuration abnormality has occurred (no problem), or a slave device that is not connected in the first place (a slave whose connection status 62 in the slave configuration information list 60 is “0”) Since it is considered that there is no need to display the device), a process of skipping the error information display of these specific slave devices is proposed, but the present invention is not limited to such an example.

FIG. 11 is a flowchart of the display process according to the third embodiment.
The process shown in FIG. 11 is substantially the same as the process shown in FIG. 7 except for a part thereof, and the same process steps as those in FIG. In other words, the processing in steps S61 to S81 is the same, and the difference is that when the determination in step S87 is NO, the processing in steps S101 and S102 is not immediately terminated, but the processing in steps S101 and S102 is executed. .

  That is, when the display object is moved to the next slave device by the process of step S86 (n = n + 1), it is determined whether or not the next slave device is registered in the configuration information (step S101). This process is synonymous with determining whether or not the connection status 62 in the slave configuration information list 60 is “1”. That is, it is assumed that the slave device whose connection status 62 in the list 60 is “1” is registered in the configuration information (not shown).

  If the next slave device is not registered in the configuration information, that is, if it is a slave device that is not actually connected (NO in step S101), the display object is further returned by returning to step S86. Move to the next slave device.

  Even if the next slave device is registered in the configuration information (step S101, YES), if the determination in step S102 is NO, the process returns to step S86 in the same manner, To the next slave device.

  The determination in step S102 is NO when the error is “0” regarding the next slave device, and YES when there is an error (including the past). This is because it is considered that there is no need to display if there is no error as described above.

  For example, the processing in step S102 refers to the communication error detailed information list 50 to determine the maximum number 52 of consecutive errors corresponding to the next slave device, the integrated value 53 of errors, and the number 54 of times of configuration abnormality. When all the values are “0”, the determination is NO.

A display example by the processing of the third embodiment is shown in FIG.
In the illustrated example, error information display examples regarding the first to fifth slave devices are shown.
Here, it is assumed that the error situation and the connection situation are as shown in FIGS. As shown in FIG. 4A, for the first and fourth slave devices, all the values of the maximum number 52 of consecutive errors, the integrated value 53 of errors, and the number 54 of times of configuration error are “0”. is there. Before that, as shown in FIG. 4B, the fourth slave device is not connected in the first place (since it is not connected in the first place, no error occurs, so the error is “0” as described above. It has become).

As a result, regarding the fourth slave device, since the determination in step S101 is NO, the display of the error information and the like (also the address) is skipped as shown in FIG.
On the other hand, for the first slave device, the determination in step S101 is YES, but since the determination in step S102 is NO, the display of the error information is similarly skipped. However, in the case of the first slave device, since the process of step S63 is always performed before the processes of steps S101 and S102 are executed, the address is displayed as shown in FIG.

Hereinafter, Example 4 will be described.
FIG. 13 is a flowchart of the display process of the fourth embodiment, and FIG. 14 is a display example of the process of the third embodiment.

  First, in Example 4, some modifications are made to the 2-digit 7-segment display LED 23. That is, as shown in FIG. 14, the 7-segment display remains two digits, but a bar graph of LEDs arranged in the horizontal direction is provided immediately below. In this example, by providing this bar graph, the number of display times can be reduced (4 times to 3 times per slave) as shown in FIG. Further, (d) it is not necessary to display the symbol C in the display of the configuration abnormality integrated value (instead, the bar graph displays that the 7-segment display content is the display of the configuration abnormality integrated value). A display using the full 2 digits can be performed. In Examples 1 to 3, it was not possible to cope with the case where two digits were required to display the configuration abnormality integrated value (however, there were few cases where the configuration abnormality integrated value was 10 or more). Furthermore, regarding (c) error integrated value, since the display indicating that the 7-segment display content is the error integrated value display is performed on the bar graph, the user can surely know the current display type. In addition, it is possible to display using the full 2 digits.

  Concerning reducing the number of display times (4 times to 3 times per slave), as shown in FIG. 14, (a) when displaying 7 segments of addresses, (b) displaying the number of consecutive errors on a bar graph. It will be realized. Furthermore, when (c) error integrated value and (d) configuration abnormality integrated value are displayed, a specific display pattern indicating that the 7-segment display content is (c) or (d) (arbitrarily in advance) However, a display pattern (not used for displaying the number of consecutive errors) is displayed on a bar graph.

  An example of these display patterns is illustrated in the “7-segment display content for LED display content” list shown in the lower right of the figure in FIG. For example, the LED display of the number of consecutive errors (b) accompanying the address display may be a hexadecimal display. In this case, the six LEDs shown in the figure can display from 1 to 64. However, since the display patterns (c) and (d) are excluded, (b) the maximum number of consecutive errors can be displayed up to 62. .

Hereinafter, the process flowchart of FIG. 13 will be described.
In FIG. 13, processes that are substantially the same as the processes shown in FIG. 11 are given the same step numbers, and descriptions thereof are omitted. That is, steps S61 to S67, S74 to S89, and steps S101 and S102 shown in FIG. 13 are the same as those shown in FIG. 11, and the processing of steps S68 to S73 shown in FIG. The process of step S111 shown in the figure is executed immediately after the process of step S63. Further, the process of step S112 is executed immediately after step S75, and the process of step S113 is executed immediately after step S81. Further, when the 7-segment display is turned off in step S89, the bar graph LED is also turned off (step S114).

  First, in step S111, when the address of the nth slave device is displayed in 7 segments in step S63, the maximum value 52 of the continuous error count of the nth slave device is displayed on the bar graph. It is processing to do.

  Next, the process of step S112 indicates that when the error integrated value 53 of the n-th slave device is displayed in 7 segments in step S75, the 7-segment display is an “error integrated value” display. This is processing for displaying a specific pattern (for example, the pattern shown in the lower right of FIG. 14) on a bar graph.

  In the process of step S113, when the “number of times the configuration error has been reached” 54 (configuration error count integrated value) of the n-th slave device in step S81 is displayed in 7 segments, This is a process of displaying a specific pattern (for example, the pattern shown in the lower right of FIG. 14) on the bar graph indicating that “the number of times reached” is displayed.

It is a structural example of the master communication apparatus in the wiring-saving system of this example. It is a structural example of the slave apparatus in the wiring-saving system of this example. It is a flowchart figure which shows the process of a communication control part. (A) is an example of a communication error detailed information list, and (b) is an example of a slave configuration information list. (A) is a flowchart figure which shows the whole process of a communication control part, (b) is a flowchart figure which shows the list update process of a communication control part. (A) is an example of processing in step S23 when the switch is pressed, and (b) is an example of timer interrupt processing. It is a flowchart figure of the error display process of Example 1. It is an example of a transition of 7 segment display contents by the processing of FIG. FIG. 10 is a flowchart of error display processing according to the second embodiment. FIG. 10 is a transition example of 7-segment display content by the process of FIG. 9. FIG. FIG. 10 is a flowchart of error display processing according to the third embodiment. It is an example of a transition of 7 segment display contents by the processing of FIG. FIG. 10 is a flowchart of error display processing according to the fourth embodiment. It is an example of a transition of 7 segment / bar graph display content by the processing of FIG. (A), (b) is a system block diagram of the conventional wiring-saving system.

Explanation of symbols

1 Wire-saving network 2 Slave device 3 Master communication device 4 CPU
5 Control device 6 Host control device 7 CPU
8 Upper network communication module 9 Upper network 10 Master communication device 20 Master communication device 21 Switch 22 Switch 23 7 segment display LED
24 interface unit 25 communication control unit 26 storage unit 27 communication unit 31 interface unit 32 communication control unit 33 transmission / reception unit 34 storage unit 40 slave device 41 transmission / reception unit 42 input / output unit 43 storage unit 50 communication error detailed information list 51 address 52 continuous error Maximum number of times 53 Error accumulated value 54 Number of times configuration error occurred 60 Slave configuration information list 61 Address 62 Connection status

Claims (11)

The master communication device including a two-digit 7-segment display unit in a wire-saving system in which a master communication device and a plurality of slave devices are connected to a wire-saving network,
A plurality of types of error information storage means for communicating with each of the slave devices via the wire-saving network, and storing a plurality of types of error information calculated based on the communication in association with addresses of the slave devices;
When the error information is displayed on the 2-digit 7-segment display unit in response to an error information display instruction, each slave device sequentially displays the address and the plurality of types of error information in time series. Error information display control means for switching and displaying on the 7-segment display;
A master communication device comprising:   The error information display control means displays the error information in one of the two digits and displays the type of the error information in the other digit when displaying the plurality of types of error information on the two-digit 7-segment display unit. The master communication device according to claim 1, wherein information to be displayed is displayed.   The error information display control unit is configured to display a specific instruction / operation while displaying the address or the plurality of types of error information on the two-digit 7-segment display unit with respect to an arbitrary slave device among the slave devices. 3. The master communication device according to claim 1, wherein the display relating to the slave device is stopped and the display relating to the next slave device is shifted to.   The error information display control means refers to a connection list indicating whether or not each of the slave devices is connected, and does not display the error information for slave devices that are not connected. Item 3. The master communication device according to Item 1 or 2.   3. The master communication according to claim 1, wherein the error information display control unit does not display the error information for a slave device in which all of the plurality of types of error information are error-free. apparatus.   The master communication apparatus according to claim 1, wherein the plurality of types of error information are a continuous error count, an error count integrated value, and a configuration abnormality integrated value. The master communication device including a two-digit 7-segment display unit in a wire-saving system in which a master communication device and a plurality of slave devices are connected to a wire-saving network,
A bar graph LED is provided in the vicinity of the 2-digit 7-segment display unit,
A plurality of types of error information storage means for communicating with each of the slave devices via the wire-saving network, and storing a plurality of types of error information calculated based on the communication in association with addresses of the slave devices;
When the error information is displayed on the 2-digit 7-segment display unit in response to an error information display instruction, each slave device sequentially displays the address and the plurality of types of error information in time series. When the error information is displayed on the 2-segment 7-segment display section, information indicating the type of the displayed error information is displayed on the bar graph LED. Second error information display control means;
A master communication device comprising: The second error information display control means includes:
The error information of any one of the plurality of types of error information is displayed on the bar graph LED when the address is displayed on the two-digit 7-segment display unit. Master communication device. In the master communication device including a two-digit 7-segment display unit in a wire-saving system in which a master communication device and a plurality of slave devices are connected to a wire-saving network,
A function of communicating with each slave device via the wire-saving network, and storing a plurality of types of error information calculated based on the communication in association with addresses of the slave devices;
When the error information is displayed on the 2-digit 7-segment display unit in response to an error information display instruction, each slave device sequentially displays the address and the plurality of types of error information in time series. A function for switching to a 7-segment display,
A program to realize A display control method in the master communication device including a two-digit 7-segment display unit in a wire-saving system in which a master communication device and a plurality of slave devices are connected to a wire-saving network,
When there is an error information display instruction, storage means for storing a plurality of types of error information calculated based on the result of communication with each slave device via the wire-saving network is stored in association with each slave device. Referring to the display control method, the plurality of types of error information are sequentially switched and displayed on the two-digit 7-segment display unit in time series for each slave device. A wiring-saving system in which a master communication device having a 2-digit 7-segment display unit and a plurality of slave devices are connected to a wiring-saving network,
The master communication device is
A plurality of types of error information storage means for communicating with each of the slave devices via the wire-saving network, and storing a plurality of types of error information calculated based on the communication in association with addresses of the slave devices;
When the error information is displayed on the 2-digit 7-segment display unit in response to an error information display instruction, each slave device sequentially displays the address and the plurality of types of error information in time series. An error information display control means for switching and displaying on a 7-segment display section.

Images