JP2002341919A - Communication controller and communication control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication controller capable of performing radio communication between an ID and a controller without causing lowering of production efficiency. SOLUTION: An ID controller 6 to record information intrinsic to a work 10 and to perform the radio communication with an ID 11 mounted on the work 10 stores a communication result when the radio communication is performed and combination of pieces of respective production equipment A to F operated in the case of the communication based on monitoring information circulating in a network 20 as updating operating states of the pieces of respective production equipment A to F and performs communication with the ID 11 at timing to become combination of the pieces of production equipment A to F operated in the case of successful communication when the radio communication is performed with the ID 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication control device and a communication control method for controlling the timing of a wireless communication of a controller that records information unique to a work and performs wireless communication with a wireless communication device attached to the work. About.

[0002]

2. Description of the Related Art There is a production system in which a wireless communication device in which information unique to a work is recorded is attached to the work, and information on the work is exchanged by performing wireless communication between the wireless communication device and a work station. Here, the wireless communication device attached to the work is called an ID because it identifies the work by information unique to the work.

In such a production system, a control device for exchanging IDs and data is provided as a production facility on the work station, and the control device is further connected to other production facilities on the work station. The units are connected by wire using parallel I / O or serial I / O.

[0004] The production system as described above, for example,
When applied to an automobile manufacturing process, a welding machine provided in a work station becomes a noise source during operation, and inverter equipment such as a drop lifter also becomes a wide-range noise source during operation. The noise due to these noise sources is transmitted through the space or through a cable.
Impairs wireless communication between D and the control device. Therefore, when wireless communication is performed between the ID and the control device, the operation of the equipment is stopped by an application that can use transmission and reception of signals between the control device and each of the production equipment, so that generation of noise due to the operation of each equipment is suppressed. Had been prevented.

[0005]

However, in the above-described production system, a noise source cannot be confirmed until after the equipment is operated, and an application for avoiding noise due to the noise source is programmed. Therefore, programming man-hours for adjustment are required,
Substantial start-up of the production system required considerable time.

[0006] In addition, since the operation start and operation stop of each production facility are performed at different timings, noise generation timings are different, and there is a combination and cancellation of noises. Therefore, it is very difficult to specify a noise source. there were.

Further, as in the above-mentioned production system,
In the case of performing wireless communication between the D and the control device, if all the facilities that are noise sources are stopped, the minimum time interval in which each production facility can be repeatedly controlled, so-called cycle time, is affected. Conversely, if it is attempted to stop all equipment that is a noise source so as not to affect the cycle time, the success rate of wireless communication between the ID and the control device is significantly reduced, and in any case, the production efficiency is reduced. Will be invited.

The present invention has been made in view of the above circumstances, and provides a communication control device capable of quickly starting up a system and performing wireless communication between an ID and a control device without lowering production efficiency. And a communication control method.

[0009]

The above object of the present invention is achieved by the following means.

(1) A communication control device according to the present invention controls a timing of a wireless communication of a controller that records information unique to a work and performs wireless communication with a wireless communication device attached to the work. A communication result determining means for determining whether the communication result between the controller and the wireless communication device is successful or unsuccessful; and a determination as to whether each of the plurality of production facilities is operating at the time of the determination by the communication result determining means. An operation determination unit, a communication result storage unit that stores the communication result by the communication result determination unit and the determination result by the operation determination unit in association with each other, and when performing wireless communication, a communication success by the communication result storage unit. Referring to the determination result associated with the communication result, the timing at which only the production equipment that is operating at the time of successful communication is calculated. A communication timing calculation means that, based on the timing calculated by the communication timing calculation means, and having a communication control means for controlling the timing of the radio communication.

(2) The communication timing calculation means includes a storage means for storing a time required for each production facility for one process;
A clock means for measuring the operation time since each production facility starts the one-step operation, and as the timing, until the production facility other than the production facility that is operating at the time of the successful communication ends its operation. Is calculated by subtracting the operation time measured by the time counting means from the time required for one process stored in the storage means.

(3) The communication timing calculating means includes a noise intensity storing means for storing a noise intensity during operation of each production facility, and the timing of the production facilities operating at the time of performing wireless communication as the timing. When the operation ends in order from the production equipment having the largest noise intensity with reference to the noise intensity storage means, it is checked whether or not only the production equipment that is operating when the communication is successful operates. Then, the time until the production facility with the large noise intensity ends the operation is calculated so that only the production facility that is operating at the time of the successful communication is operated.

(4) A communication control method according to the present invention is a communication control method in which information unique to a work is recorded and a timing of the wireless communication is controlled by a controller that performs wireless communication with a wireless communication device attached to the work. In the step of determining whether the communication result between the controller and the wireless communication device is success or failure, and, when determining the communication result, determining whether each of the plurality of production equipment is operating, A step of storing the communication result and the determination result as to whether the plurality of production facilities are operating or not, and performing the wireless communication, when performing the wireless communication, the determination result associated with the communication result of successful communication; A step of calculating the timing at which only the active production equipment operates when the communication is successful, and automatically adjusting the timing of the wireless communication based on the calculated timing. Characterized by a step of controlling.

(5) In the step of controlling the timing of the wireless communication, the step of storing the time required by each production facility for the one step, and the operation time since the start of the operation of each step by each production facility is determined. Counting the time until the production equipment other than the production equipment operating at the time of successful communication ends the operation, and subtracting the timed operation time from the time required for the one step as the timing. Is calculated by

(6) The step of controlling the timing of the wireless communication includes a noise intensity storage means for storing a noise intensity during operation of each production facility.
When performing wireless communication, at the time when the operation ends in order from the production equipment having the largest noise intensity among the production equipments in operation, it is checked whether or not only the production equipment that is operating when the communication is successful operates. The time until the production facility with the large noise intensity ends the operation is calculated so that only the production facility that is operating when the large production facility is completed and the communication is successful operates.

[0016]

According to the first aspect of the present invention, the communication result by the communication result judging means and the judgment result by the operation judging means are stored in association with each other. By referring to the determination result associated with the communication result that becomes, and calculating the timing at which only the operating production equipment operates when communication is successful, it is possible to reliably execute wireless communication based on past communication results . Further, since it is not necessary to stop the production equipment due to the wireless communication, the work efficiency can be maintained.

According to a second aspect of the present invention, as the timing of the wireless communication, the time required for one step of storing the time until the production equipment other than the production equipment being operated at the time of successful communication ends the operation is stored in the storage means. Since it is calculated by subtracting the operation time measured by the time measuring means from
The moment when wireless communication becomes possible can be used as wireless communication timing.

According to a third aspect of the present invention, the time from the production equipment having the largest noise intensity to the end of the operation is calculated in order.
At the end of the operation, it is determined whether or not only the production equipment that is operating when communication is successful operates.If the production equipment with the largest possible noise intensity is terminated, only the production equipment that is operating when communication is successful operates. As described above, the time until the production facility having the large noise intensity completes the operation is calculated, so that the wireless communication can be performed when the noise intensity of the entire production facility becomes low.

According to a fourth aspect of the present invention, the communication result and the determination result as to whether or not each of the plurality of production facilities are operating are stored in association with each other. Since the timing at which only the production facility that is operating at the time of successful communication is operated by referring to the determination result associated with, the wireless communication can be reliably executed based on past communication results. Also, for wireless communication,
Since there is no need to stop the production equipment, the working efficiency can be maintained.

According to a fifth aspect of the present invention, as the timing of wireless communication, the time required for one process to store the time until the production equipment other than the production equipment in operation at the time of successful communication ends the operation is stored in the storage means. Since it is calculated by subtracting the operation time measured by the time measuring means from
The moment when wireless communication becomes possible can be used as wireless communication timing.

The invention according to claim 6 calculates the time from the production equipment having the largest noise intensity to the end of the operation in order,
At the end of the operation, it is determined whether or not only the production equipment that is operating when communication is successful operates.If the production equipment with the largest possible noise intensity is terminated, only the production equipment that is operating when communication is successful operates. As described above, the time until the production facility having the large noise intensity completes the operation is calculated, so that the wireless communication can be performed when the noise intensity of the entire production facility becomes low.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a work station 1 to which the present invention is applied, and FIG. 2 is a diagram showing monitoring information traveling around a network formed in the work station.

The work station 1 is responsible for one of a plurality of types of processing performed on a work in the production system. In this embodiment, the work station 1
Although the following description will be made assuming that the welding process is in charge, the present invention is also applicable to a work station that performs other processes.

The work station 1 includes a plurality of production facilities, for example, an inverter drop lifter for unloading the work 10 as the production facility A, and a work station 1 as the production facility B for performing a series of welding processes on the conveyed work 10. Automatic transfer device that transfers the work inside
An inverter welding apparatus for performing inverter welding on the work 10 as the production facility C, a MIG welding apparatus for performing MIG welding on the work 10 as the production facility F, and a drop lifter controller 2 for controlling these production facilities, respectively, It has a transport controller 3, an inverter welding controller 4,..., A MIG welding controller 5.

The work station 1 further has an ID controller 6, which can wirelessly communicate with an ID 11 attached to the conveyed work 10. In this ID11,
The information includes information unique to the work 10, for example, information on processing performed on the work 10 and information on processing that needs to be performed on the work 10 from now on. By the wireless communication between the ID controller 6 and the ID 11, the processing necessary for the work 10 is recognized, and after the necessary processing is completed, the processed information can be written to the ID 11.

Further, a drop lifter controller 2, an automatic transport controller 3, an inverter welding controller 4,..., A MIG welding controller 5, an ID controller 6
Are connected to a network 20 forming a loop, and the ID controller 6 outputs information unique to the work 10 wirelessly obtained from the ID 11 to the network 20 so that each production facility can work based on the information. It can operate for 10 machining.

During operation of each production facility, the ID controller 6 controls all facilities by utilizing a so-called cyclic transmission system in which the operating status of each production facility is cyclically transmitted at a predetermined cycle as a series of monitoring information 21. Always get the driving status of. Each time the monitoring information 21 passes through each production facility, the operation status is updated, and the monitoring information 21 continues to rotate in a loop formed by the network 20. Here, the monitoring information 21 is
Specifically, the information is as shown in FIG.

As shown in FIG. 2, the monitoring information 21 indicates, for each production facility, whether or not each production facility is operating, what kind of each production facility is, and whether or not each production facility has been changed. And information on the operation status of each facility. Immediately after the operation of the work station 1 starts, the monitoring information 21 includes information (A, B,...) Of symbols assigned to the production equipment.
If each production facility is operating when passing through each production facility, a check (marked with a black circle in FIG. 2) is added to the operation column, and the facility provided by the production facility is provided. Is written in the equipment type column, and if there is a change in the equipment, a check (white circle in FIG. 2) is added to the equipment change column. When the monitoring information 21 goes around the second and subsequent laps, only the information that has changed from the previous time is rewritten.

Each of the production facilities A to F stores information of a number indicating the type of the facility, and the monitoring information 21
The monitoring information 21 is updated by outputting the information to the monitoring information 21 every time is turned.

Next, a specific configuration of the ID controller 6 will be described.

FIG. 3 is a block diagram showing the configuration of the ID controller 6. FIG. 4 is a flowchart showing a flow of the operation time counting of each production facility by the operation time counting unit 32 included in the ID controller 6. FIG. 5 is an operation time counted for each production facility stored in the operation time counting unit 32. FIG. FIG. 6 is a diagram illustrating equipment information stored in the equipment information storage unit 34 of the ID controller 6. 7 is a flowchart illustrating a procedure for creating a communication result stored in the communication result storage unit 35 included in the ID controller 6, and FIG. 8 is a diagram illustrating a communication result stored in the communication result storage unit 35. .

As shown in FIG. 3, the ID controller 6
Are a monitoring information transmitting / receiving unit 31 and an operation time counting unit 32
, An equipment type determination unit 33, an equipment information storage unit 34, a communication result storage unit 35, an ID communication unit 36, and a noise source avoidance processing unit 37.

The monitoring information transmitting / receiving unit 31 is connected to the network 2
The monitoring information 21 circulating around 0 is received and transmitted to the network 20.

The operation time counting section 32 counts the time elapsed from the start of each cycle time operation of each production facility based on the received monitoring information 21. Specifically, the operation time counting unit 32 counts the operation time of each production facility according to the procedure shown in the flowchart of FIG.

The ID controller 6 refers to the monitoring information 21 received by the monitoring information transmitting / receiving section 31 (step S4).
01), the time since the start of the operation of the production facility in operation is counted (step S402).

Then, it is determined whether or not any of the plurality of production facilities has stopped its operation after one process has been completed (step S403). If there is no production facility whose operation has been stopped (step S403: NO), step S40
Returning to step 1, the operation time of each production facility is counted, and there is a production facility whose operation has been stopped (step S403:
YES) resets the counted operation time of the production equipment whose operation has been stopped, and prepares for counting from the operation time 0 when the stopped production equipment starts operation again (step S404).

Then, whether the whole production system has stopped,
That is, it is determined whether or not the entire work station 1 including a plurality of production facilities has been stopped (step S40).
5) If the entire system is not stopped (step S
(405: NO) returns to step S401, and if the entire system is stopped (step S405: YES),
The operation time counting ends.

The operating time counting section 32 counts and stores the time during which each production facility has been operating since the start of the cycle time operation, that is, the operating time, based on the monitoring information 21 as described above. . The operation time is stored for each production facility as shown in FIG.

The equipment type judging unit 33 judges the equipment type of each production equipment by referring to the equipment type information of the monitoring information 21, and further refers to the equipment change information of the monitoring information 21 to obtain each production equipment. It is determined whether or not the equipment has been changed (for example, replacement of the equipment type itself of the production equipment, replacement of the motor, or change of the frequency of the inverter device). When there is a change in the production equipment, the equipment type determination unit 33 notifies the noise source avoidance processing unit 37 that the equipment has been changed.

The equipment information storage unit 34 stores information on production equipment as shown in FIG. 6 in advance. The equipment information storage unit 34 stores associations between the names of the equipment types and the numbers indicating the types of the equipment in the order of the types of the equipment that are strong noise sources during the single operation. For example, the drop lifter (the name of the type of equipment) that is the strongest noise source during single operation is stored at the top, and is associated with x1 (a number indicating the type of equipment). Further, the equipment information storage unit 34 also stores, for each type of equipment, the time required for the operation in one step, that is, the so-called cycle time.
For example, in FIG. 6, the cycle time of the drop lifter is 15000 ms.

The equipment information storage unit 34 also stores the types of equipment assigned to each production equipment. For example, since a drop lifter is allocated to the production facility A, a box corresponding to “drop lifter” below “A” representing the production facility A is marked with an asterisk (*), and the production facility B is , An automatic transfer device is assigned, so that a box corresponding to “automatic transfer device” under “B” representing production equipment B is marked with an asterisk (*). Is also stored.

The communication record storage unit 35 stores information indicating whether the communication was successfully performed without being disturbed by noise (OK) for the combination of the production equipment operating when performing wireless communication with the ID 11 or the communication was successful. The communication result indicating whether the communication has failed (NG) is stored. The information on the combination of the production facilities operating at the time of wireless communication is transmitted by the noise source avoidance processing unit 37 to the communication result storage unit 35 with reference to the monitoring information 21 so that the communication result storage unit 35 stores the information as the communication result. can do. Whether the communication has been successfully performed is determined by the noise source avoidance processing unit 37 that the ID communication unit 36 has successfully communicated and transmitted to the communication result storage unit 35. Can be stored as

More specifically, a communication result is created according to the procedure shown in the flowchart of FIG.
Is stored.

First, the noise source avoidance processing unit 37 determines the ID1
It is determined whether or not wireless communication has been performed with the communication device 1 (step S
701), when wireless communication is not performed (step S70)
1: NO), stand by until the wireless communication is performed, and when the wireless communication is performed (step S701: YES), refer to the monitoring information 21 and specify the production facility operating at the time of the wireless communication (step S701: NO). Step S702). Further, the noise source avoidance processing unit 37 determines whether or not the wireless communication has been successfully performed based on whether or not information specific to the work 10 has been obtained from the ID 11 by the communication (step S7).
03).

Then, the noise source avoiding processing unit 37 determines whether or not the wireless communication has been successful in the combination of the production facilities operating at the time of the wireless communication as a communication result.
The result is transmitted to the communication result storage unit 35 (step S704).

The noise source avoiding processing unit 37 determines whether the entire production system has been stopped, that is, whether the entire work station 1 including a plurality of production facilities has been stopped (step S705), and the entire system has been stopped. If not (step S705: NO), step S701
Returns to the step (S70).
5: YES), the communication result creation process ends.

The communication result transmitted in step S704 is, for example, as shown in FIG. 8, when the production equipment A to the production equipment F are operating, the communication between the ID controller 6 and the ID 11 is generated due to the occurrence of noise. If not, the combination is stored as NG because communication is not possible during the operation of the production facilities A to F. Further, when communication between the ID controller 6 and the ID 11 is possible while the production facilities B to D are operating, it is assumed that communication is possible when the production facilities B to D operate.
This combination is stored as OK. In the example shown in FIG. 8, the production facilities in the columns with black circles are operating.

The ID communication unit 36 includes the noise source avoidance processing unit 3
Based on the instruction from 7, wireless communication with ID11,
The information unique to the work 10 is received.

The noise source avoidance processing unit 37 creates communication results as described above, monitors information 21, equipment information stored in the equipment information storage unit 34, communication results stored in the communication history storage unit 35, and the like. Based on this information, the communication timing at which the wireless communication between the ID controller 6 and the ID 11 succeeds without lowering the work efficiency of the entire work station 1 is calculated.

The calculation of the timing of wireless communication by the noise source avoidance processing unit 37 is specifically performed according to the procedure shown in FIGS.

FIGS. 9 and 10 are flowcharts showing the procedure by which the noise source avoidance processing unit 37 calculates the timing of wireless communication. The next procedure shown in FIG. 9 follows the procedure shown in FIG. 10, and the next procedure shown in FIG. 10 follows the procedure shown in FIG.

First, the noise source avoidance processing unit 37 has a ID1 in advance to process the work 10 flowing on the line.
It is determined whether or not a communication start trigger that is a trigger for performing wireless communication with the work 1 and receiving information unique to the work 10 has been input (step S901). If no communication start trigger has been input (step S901: NO), If the communication start trigger is input (step S901: YES), 0, which is an initial value, is substituted into I.

Then, the noise source avoidance processing section 37 determines whether or not a change in the equipment has been transmitted from the equipment type determining section 33 (step S903). If there is no change in the equipment (step S903: NO), step S9
05, and when there is a change in the equipment (step S90)
3: YES), the communication result stored in the communication result storage unit 35 is deleted because the communication result stored in the communication result storage unit 35 is the information before the equipment is changed and is meaningless. (Step S904).

Next, the noise source avoidance processing unit 37 specifies the combination of the currently operating production equipment based on the monitoring information 21 (step S905), and determines the specified combination of production equipment (hereinafter referred to as a specific combination). ) Is the communication result storage unit 3
5 (step S906).

It is determined whether or not the same combination as the specific combination exists in the communication result storage unit 35 (step 90).
7) If a specific combination exists (step S907:
(YES), and further, it is determined whether or not the communication with the ID 11 has been successful at the time of the specific combination with reference to the communication result storage unit 35 communication result (step S908).

If the communication has succeeded in the specific combination in step S907 (step S908: YES), the noise source avoidance processing unit 37 controls the ID communication unit 36 to control ID1.
1 is performed (step S909), and the result of the communication (success or not) is stored in the communication result storage unit 35 together with the specific combination (step S910). It is determined whether or not the result of the communication is successful (step S911). If the communication is successful (step S911: YES), the wireless communication process is terminated as it is, and the communication is unsuccessful (step S911: NO). Then, the process returns to step S906 to make the communication successful.

On the other hand, if the communication has failed in the specific combination (step S908: NO), the noise source avoidance processing unit 3
7 adds 1 to I (step S912), and refers to the information about the production equipment in the equipment information storage unit 34, and the production equipment that becomes the I-th strongest noise source among the operating production equipment is not operated. Is a specific combination (step S913), and the process returns to step S906.

In step S907, when the same combination as the specific combination does not exist in the communication result storage unit 35 (step S907: NO), the noise source avoidance processing unit 37 determines whether or not I = 0. Judgment (step S91
4) In the case of I = 0 (step S914: YES), it is not the combination stored in the communication result, but the result of the communication is completely unknown. Let it.

If I = 0 is not satisfied (step S914: N
O), it is determined whether or not the work efficiency of the entire work station 1 does not decrease even if the operation of the production facility which is the I-th strongest noise source among the production facilities in operation is completed (step). S915). Here, the time until the operation of the production facility, which is the I-th strongest noise source, ends.
The operation time of the facility counted by the operation time counting unit 32 is calculated by subtracting the cycle time of the facility stored in the facility information storage unit 34. In addition, if the waiting time for the calculated time is longer than the predetermined time for stopping the operation of the entire work station 1, it is determined that the work efficiency is reduced.

If it is determined that the work efficiency of the entire work station 1 is reduced (step S915: YES),
In order to consider a case where the operation of the production facility serving as the (I + 1) -th strongest noise source has stopped, the process proceeds to step S912. If it is determined that the work efficiency of the entire work station 1 does not decrease (step S915: NO), the process proceeds to step S90.
Proceed to 9 to execute wireless communication.

As described above, according to the present invention, the information of each production facility is written in the monitoring information circulating in the network 20 of the work station 1 by the cyclic transmission method, and the operation of the production facility changes every moment. The situation I
The D controller 6 can monitor. Accordingly, the work efficiency of the entire work station 1 is not reduced and the ID controller 6 and the ID 1
Communication between one can be guaranteed.

Specifically, according to the present invention, by storing and storing past communication results, it is possible to instantaneously determine which combination of operating production facilities is successful in communication and in which case communication is unsuccessful. , Can respond. In addition, even in the case of a combination in which communication fails, communication can be determined for a combination in which the production equipment with the strongest noise source becomes inactive in order from the production equipment with the strongest noise source. The communication can be performed at the timing when the noise intensity of the entire work station 1 becomes small, and the communication between the ID controller 6 and the ID 11 can be guaranteed without lowering the work efficiency of the whole work station 1. Further, according to the present invention, the communication result is updated each time communication is performed, so that it is possible to cope with a slight change in the noise source.

Further, according to the present invention, the remaining time until the end of the operation of the production equipment can be calculated by subtracting the measured operation time of the production equipment from the cycle time of the production equipment, so that the combination enabling communication is possible. Can be calculated.

Further, according to the present invention, even when there is a change in the production equipment and the noise source is eliminated or the noise intensity of the noise source is changed, the equipment type judgment unit 33 makes the change based on the monitoring information 21. By transmitting the communication result to the noise source avoidance processing unit 37, the communication result in the communication result storage unit 35 is deleted, and the creation of a new communication result starts, so that it is possible to flexibly cope with a change in equipment.

Further, according to the present invention, since the wireless communication can be performed at the optimum communication timing between the ID controller 6 and the ID 11 based on the monitoring information 21, each production facility can be used for performing the wireless communication. There is no need to incorporate an application for stopping, and the work station 1 can be started up easily.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a work station to which the present invention is applied.

FIG. 2 is a diagram showing monitoring information circulating in a network formed in a work station.

FIG. 3 is a block diagram illustrating a configuration of an ID controller.

FIG. 4 is a flowchart showing a flow of operation time counting of each production facility.

FIG. 5 is a diagram showing the operation time counted for each production facility stored in the operation time counting unit.

FIG. 6 is a diagram showing equipment information stored in an equipment information storage unit.

FIG. 7 is a flowchart illustrating a procedure for creating a communication result stored in a communication result storage unit.

FIG. 8 is a diagram showing a communication result stored in a communication result storage unit.

FIG. 9 is a flowchart illustrating a procedure in which a noise source avoidance processing unit calculates the timing of wireless communication.

FIG. 10 is a flowchart illustrating a procedure of calculating a wireless communication timing by the noise source avoidance processing unit following FIG. 9;

[Explanation of symbols]

 1 work station, 2 drop lifter controller, 3 automatic transfer controller, 4 inverter welding controller, 5 MIG welding controller, 6 controller, 10 work, 20 network, 21 monitoring information, 31 monitoring information transmitting / receiving unit, 32 operation time counting unit, 33 Equipment type determination unit, 34 Equipment information storage unit, 35 Communication result storage unit, 36 Communication unit, 37 Noise source avoidance processing unit, AF production equipment.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3C100 AA56 AA68 BB33 CC02 CC11 DD07 DD14 DD22 DD23 DD25 DD32 DD33 EE01 3D114 AA05 AA07 CA05 CA18 DA07 DA07 DA14 EA03 EA05 FA04 FA07 FA11 JA18 5B089 JB15 JB16 KA12 KC28 ME10 MC

Claims (6)

[Claims] 1. A communication control device that records information unique to a work and controls timing of the wireless communication of a controller that performs wireless communication with a wireless communication device attached to the work. Communication result determining means for determining whether the communication result is successful or unsuccessful; operation determining means for determining whether each of the plurality of production facilities is operating at the time of the determination by the communication result determining means; and the communication result determining means. Communication result storage means for associating and storing the communication result by the operation determination means with the determination result by the operation determination means; and performing the determination associated with the communication result indicating successful communication by the communication result storage means when performing wireless communication. With reference to the result, communication timing calculation means for calculating the timing at which only the active production equipment operates at the time of successful communication, Based on the timing calculated by the serial communication timing calculating means, the communication control apparatus characterized by having a communication control means for controlling the timing of the radio communication. 2. The communication timing calculation means, wherein: a storage means for storing a time required for each production facility for one process; and a clock means for measuring an operation time since each production facility started the operation of the one process. As the timing, the time until the production equipment other than the production equipment in operation at the time of successful communication ends the operation is measured by the timing means from the time required for one process stored in the storage means. The communication control device according to claim 1, wherein the calculation is performed by subtracting the operating time. 3. The communication timing calculation means includes noise intensity storage means for storing noise intensity during operation of each production facility, and the timing includes the noise of the production facility operating at the time of performing wireless communication. At the time when the operation ends in order from the production equipment having the largest noise intensity with reference to the intensity storage means, it is checked whether or not only the production equipment that is operating when the communication is successful operates. 3. The method according to claim 2, wherein a time until the production facility having a high noise intensity ends the operation is calculated so that only the production facility that is operating at the time of the successful communication is operated. The communication control device according to any one of the preceding claims. 4. A communication control method for controlling timing of a wireless communication of a controller that records information unique to a work and performs wireless communication with a wireless communication device attached to the work, wherein the controller and the wireless communication device A step of determining whether the communication result is successful or unsuccessful; anda step of determining whether or not each of the plurality of production facilities is operating when the communication result is determined. The communication result and the plurality of production facilities A step of storing the results of determination as to whether or not each of them is in operation; and, when performing wireless communication, referring to the determination results associated with the communication results of successful communication, and Calculating a timing at which only the equipment operates; and automatically controlling timing of wireless communication based on the calculated timing. A communication control method comprising: 5. The step of controlling the timing of the wireless communication, wherein each production facility stores a time required for the one step, and each production facility measures an operation time from the start of one step operation. The time until the production equipment other than the production equipment that is operating at the time of successful communication ends the operation as the timing, by subtracting the measured operation time from the time required for the one step The communication control method according to claim 4, wherein the calculation is performed. 6. The step of controlling the timing of the wireless communication includes a noise intensity storage unit that stores a noise intensity during operation of each production facility, and the production facility operating at the time of performing wireless communication as the timing. At the time when the operation ends in order from the production equipment having the largest noise intensity, it is checked whether or not only the production equipment which is operating at the time of the communication success operates. 6. The communication control method according to claim 5, wherein a time until the production facility having a large noise intensity finishes the operation is calculated so that only the production facility that is operating at the time is operated. .