JPH02231605A - Detector check system for sequence controller - Google Patents

Abstract

PURPOSE:To enable just a single operator to easily perform the actuation of a detector and the wiring check by adding a device to confirm a detector which outputs a detection signal to a controller main body independently of this controller main body. CONSTITUTION:A headphone type receiver (9 confirming device) is added to a controller main body independently of this main body 1 to identify the detectors including the limit switches LS1 and LS2, the switches PB1 and PB2, etc., which output the ON signals (detection signals). Thus a checker wearing the receiver 9 on his/her head can perform the actuation and the wiring check of each of the detectors (sensors and switches (LS1, LS2, PB1 and PB2 with push of the switches and by reference to the voices received via a speaker. As a result, just a single operator can perform the actuation and the wiring check of those detectors.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a detector check system in a sequence controller, and more particularly to a system for checking the operation of a detector and checking the wiring between a controller main body and a detector. It is something.

[Prior art] Conventionally, in a sequence controller, before the actual operation of the υ1 target (mechanical device process, etc.), a detector (sensor, switch, etc.) connected to the controller body is
We are checking the operation and wiring of the equipment. This is because each detector is connected to the detector input terminal of the controller body, but the controller body is equipped with a lamp corresponding to the detector input terminal, and the on signal (detection signal) from the detector is Depending on the input, the lamp corresponding to that detector lights up. Then, the check operator forcibly turns on the detector (sensor, switch, etc.) and sends an on signal from the detector to the controller body, and Shintan is input to the regular input terminal of the controller body, and the input terminal The detector (sensor, switch, etc.) is checked for disconnection and the wiring is checked based on whether the corresponding lamp lights up.

[Problems to be Solved by the Invention] However, if the controller body and the controlled object (detector) are installed in different rooms, or even if they are located in the same space, they may be placed far apart from each other. Multiple people were required to check for disconnections and wiring. That is, one person to confirm that the check lamp provided on the controller body is lit, and another person to forcibly turn on the detectors (sensors, switches, etc.). This required two people to check each detector one by one while calling out to each other, which was very troublesome and uncertain.

The purpose of this invention is to check the operation and wiring of the detector.
The object of the present invention is to provide a detector check system in a sequence controller that can be easily performed.

[Means for Solving the Problems] The present invention provides a sequence controller in which a plurality of detectors are connected to a controller main body, and the controller main body inputs detection signals from the detectors to sequentially control a controlled object. Separately, the gist thereof is a detector check system in a sequence controller that is provided with a confirmation device for identifying a detector that outputs a detection signal to the controller main body.

[Operation] When checking the operation and wiring of a detector, one operator turns on the detector and can identify the on-operation of the corresponding detector using a confirmation device separate from the controller main body.

[Example] An example embodying the present invention will be described below with reference to the drawings.

FIG. 1 shows the electrical configuration of the sequence controller of this embodiment in a state where it is connected to a controlled object (mechanical device process, etc.).

The controller main body 1 of the sequence controller is equipped with a central processing unit (hereinafter referred to as CPU) 2, an input interface 3, and a storage device 4. The CPU 2 executes various operations according to control programs stored in the storage device @4. Input interface 3 has each input terminal xo
Limit switch LS1 as a detector provided in the controlled object (mechanical device process, etc.) via oo~x004
, LS2 and switches PB1 and PB2 of the operation panel 5 are connected. And CPU2 is limit switch LS
An on signal (detection signal) is input from I, LS2, and switches PB1 and PB2.

Furthermore, this sequence controller has detectors (limit 1 to switch LSI, LS2, switches PB1, PB
2) Equipment for checking disconnections and wiring can be connected. Each device will be explained below.

The controller main body 1 is equipped with an audio generating device 6, a wireless vs7, and a speaker 8. The voice generating device 6 is provided with a plurality of channels, and messages are stored in advance in each channel. Each of these messages ranges from “0” to “
9" and alphabetic messages such as rXJ. By combining each message (combining 4 messages), the input terminal numbers rxooo to x00
4J can be displayed audibly.

Further, four registers Do-D3 are prepared in advance in the CPU 2, and each register Do-D3 stores data (calling data) corresponding to the channel of the audio generator @6. Therefore, the voice generating device 6 outputs the stored message as a voice signal based on the calling command from the register Do-D3 of the CPU 2.

The radio device 7 converts the audio signal from the audio generator @6 into radio waves and outputs them to the outside of the controller main body 1 from the antenna 7a. Further, the audio signal from the audio generator 6 is outputted from the speaker 8 as audio.

A headphone type receiver 9 serving as a confirmation device receives the radio waves output from the radio device 7 and outputs them as audio from the speaker of the headphone.

In this embodiment, the controller main body 1 is the management room R1.
Also, the control target (limit switch LSI,
LS2, switches PBI, PB2, etc.) are arranged in a work room R2 separate from the management WRI.

On the other hand, a sequence for checking shown in FIG. 2 is stored in the storage device 4. Incidentally, this FIG. 2 mainly shows a sequence part for checking the switch FBI.

Next, the operation of checking for wire breakage and wiring of the limit switch LSI, LS2, switches PB1, PB2, etc. prior to the actual operation of the control target (mechanical device process, etc.) of this sequence controller will be explained based on FIG.

One checking worker wears a headphone-type receiver 9 on his head in work room R2, and presses limit switches LS1 and L.
Check for disconnections and wiring of S2, switches FBI, PB2, etc. In the following explanation, for convenience of explanation,
A case will be described in which the disconnection of the switch Pal and the wiring are checked.

In FIG. 2, in a state where CRI is energized and CR1a is closed, the operator presses switch P.
B1 (input terminal xOOO) is turned on. Then, switch PB1 is closed → 1 pulse oscillation of PLS1 (by detecting the rising edge of the pulse signal) → PLS1a is closed →
CR2 excitation → CR2a closed circuit (self-holding). Also, CR2 excitation→CR2b closing→CR3 excitation→CR3a closing→D3 value setter 10 writes data corresponding to “x” in register D3. Excitation of the CR3→Closing of the CR3b→Writing of data corresponding to rOJ in the register D2 by the D2 value setter 11. The CR3 excitation → CR3C closing → writing of data corresponding to rOJ in the register D1 by the D1 value setter 12. Excitation of CR3→Closing of CR3d→Writing of data corresponding to rOJ of register Do by Do value setter 13.

Excitation of CR3 → CR3e closing → CR4 excitation → CR4
a cycle (self-maintaining). Closed circuit of CR3e → 1 pulse generation of PLS2 @ (by detection of rising edge of pulse signal)
→ PLS2a closed circuit → Transfer command output from SET to audio generator 6 (signal to perform transfer) → SETa closed circuit → Audio generator 6 from register Do-D3 by transferer 14
data transfer to.

This data transfer operation by the transfer device 14 is performed by the register DO
→D1 →D2 →D3 are performed in this order.

Then, the audio generator 6 outputs the rXJ audio signal to the speaker 8 and the radio device 7 based on the data transferred from the register Do, and the non-tQ device 7 outputs the audio signal to the check worker from the speaker of the headphone type receiver 9. "x" is output. Similarly, the voice of "0" is checked by the data transferred from the register D1, the voice of rOJ is checked by the data transferred from the register D2, and the voice of rOJ is checked by the data transferred from the register D3 from one side of the headphone type receiver 9. Output to the worker.

As a result, the check operator should check that there is no disconnection in the switch FBI and that the switch FBI is not connected to the input terminal xOOO by listening to the voice "input terminal Can be done.

Further, the audio generating device 6 outputs signals to CR6a and CR6b in FIG. 2 when outputting audio after the data transfer of the register Do-D3 is completed. CR68 open → Relet operation of transmitter 14. CR6b closed → CR5 excited → CR5a open. Said CR5 excitation → CR5b open → CRI demagnetization → CR1a open. The reset operation of the SET by the CR6b closing → RST.

In the explanation of FIG. 2, the check of the switch PB1 has been explained, but the parts whose explanation is omitted in FIG. 2 are used when checking other detectors.

In this embodiment, the on signal (detection signal) is sent to the controller body 1 separately from the controller body 1.
Detector that outputs (limit switch LSI, LS2,
A headphone type receiver 9 (confirmation device) for identifying the switches PB1, PB2, etc.) is provided. Therefore, in the past, if the controller main body and the controlled object (detector) were installed in different rooms or far apart even if they were in the same space, it was difficult to detect sensors, switches, etc. Previously, multiple people were required to check the operation and wiring of the headphone receiver 9. However, in this embodiment, the checker wearing the headphone type receiver 9 on his head presses a switch and hears the sound coming from the headphone type receiver 9's speaker. It is possible to easily check the operation and wiring of the detectors (sensors and switches) one by one by listening to the following sounds.

In addition, in this embodiment, communication can be made wirelessly to the headphone type receiver 9, so if a communication cord is attached, the cord will not interfere with work such as walking, but it can be easily carried out. You can proceed with your work. Furthermore, since the headphone type receiver 9 as a confirmation device can be attached to the head, both hands can be moved freely.For example, holding a design drawing in one hand and detecting a sensor switch, etc. with the other hand. The device can be turned on and has excellent workability. Furthermore, in the above embodiment, the detector (limit switch LSI, LS2, switch FBI
, PB2, etc.), so you can check them while looking at the drawing.

Note that this invention is not limited to the above embodiments,
For example, in the embodiment described above, the check operator can confirm by voice, but the check operator may also be able to confirm by using a lamp corresponding to the input terminal.

[Effects of the Invention] As described in detail above, according to the present invention, an excellent effect is achieved in that one person can easily check the operation and wiring of the detector.

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram of a sequence controller according to an embodiment, and FIG. 2 is a check sequence diagram. 1... Controller body, 9... Headphone type receiver as confirmation device, LSI... Limit switch as detector, LS2... Limit switch as detector, PSI... as detector switch, PB
2...Switch as a detector. Patent applicant Nippon Insulator Co., Ltd.

Claims (1)

[Claims] 1. In a sequence controller in which a plurality of detectors are connected to a controller main body, and the controller main body inputs detection signals from the detectors to sequentially control a controlled object, separately from the controller main body, 1. A detector check system for a sequence controller, characterized in that a controller main body is provided with a confirmation device for identifying a detector that outputs a detection signal.