JPH03277041A - Signal processing unit - Google Patents

Abstract

PURPOSE:To discriminate whether a cause to a fault resides in a signal processing circuit or an opposite equipment by loading a test circuit to the signal processing circuit on the occurrence of the fault so as to implement communication test between the signal processing circuit detecting the fault and a test signal processing circuit. CONSTITUTION:When a signal processing circuit 11 detects a fault, a host controller 7 allows a man-machine interface device 10 to type out a message informed of fault occurrence from the signal processing circuit 11. A maintenance personnel connects contacts of a rotary switch 17 and output lines 221, 222, 223 by using a connector 9, connect contacts of a rotary switch 16 and input lines 231, 232, 233 to load a test circuit 8 to the signal processing circuit and uses the rotary switches 16,17 to select required input and output lines 231, 221. When the recovery of the fault is confirmed by the maintenance personnel, the test circuit 8 is removed to make the test complete.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a signal processing device, and particularly to a signal processing device having an output line and an input line provided corresponding to each of a plurality of lines and connected to the lines. The present invention relates to a signal processing device having a processing circuit and an interface control circuit that performs relay control of control information and transmission/reception data between these signal processing circuits and a host control device.

[Conventional technology]

Conventionally, in this type of signal processing device, when a failure occurs in one of the signal processing circuits provided for each line, that signal processing circuit is replaced, and communication is then started with the other device to resolve the problem. It was confirmed that the failure was corrected by not having any problems.

[Problem to be solved by the invention]

In the conventional signal processing device described above, when a fault such as an overconfidence abnormality is detected in the signal processing circuit, it is easy to determine whether the fault is caused by an abnormality in the signal processing circuit or the other device. Moreover, there is a drawback in that it is not possible to confirm that the fault has been repaired after replacing the signal processing circuit until communication with the partner device is started.

The purpose of the present invention is to easily determine whether the cause of a fault is in the signal processing circuit or the other device, and to confirm that the fault has been repaired after replacing the signal processing circuit without using communication with the other device. The object of the present invention is to provide a signal processing device that can perform the following operations.

[Means to solve the problem]

The signal processing device of the present invention includes a test signal processing circuit having an output line and an input line, and a first test signal processing circuit to which the output line of the test signal processing circuit is connected to a common terminal.
and a second rotary switch to which the input line of the test signal processing circuit is connected to a common terminal, and the test circuit is the signal processing device C1, :@It12, and each Connect the human power line of the signal processing circuit to each contact of the first rotary switch, connect the output line of each signal processing circuit to each contact of the second rotary switch, and interface control with the test signal processing circuit. and a connector for connecting the interface ll to the circuit.
When the llm1 circuit receives a test command including the number of the signal processing circuit under test from the higher-level control device, the llm1 circuit communicates with the signal processing circuit of that number, the test signal processing circuit, and the higher-level control! Relay control of control information and transmission/reception data is performed with the D-equipped mushroom.

[Effect]

When a fault is detected, attach the test circuit to the signal processing device and select the input line and output line of the faulty signal processing circuit using each rotary switch. A communication test is performed between this signal processing circuit and the test signal processing circuit by forming an opposing route between the test signal processing circuit and inputting a test command that includes the number of the signal processing circuit in which the fault has occurred. I can do it. If no abnormality is detected in this communication test, it can be determined that the signal processing circuit described above is operating normally, so this communication test will determine whether there is an abnormality in the signal processing circuit in which the fault was detected. It is possible to determine whether there is an abnormality, and by performing this communication test after replacing the signal processing circuit, it is possible to confirm that the fault has been repaired.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the configuration of a signal processing device according to an embodiment of the present invention.

In this example, there are three partner devices! 21+, 212°21
Output line 227.222 connected to each of 3
．． 223 and input lines 231, 232, 233, and the signal processing circuit 11 provided corresponding to these three sets of lines.
12.13 and the output 1 of the signal processing circuit 11.12.13
21.22゜The signal outputted to 23 is sent to the output line 221,
222.

The signals input from the drivers 4+ and 42.43 and the input lines 231 and 232.233 are sent to the signal processing circuit 1+ and the input lines 3+ and 32 of 12.13.
．． 33, the receivers 5+, 52.

53, an interface control circuit 6, a host control device 7 to which a man-machine interface 8110 is connected, a removable test circuit 8, and a connector 9. The interface control circuit 6 performs relay control of control information and transmission/reception data between the signal processing circuits 1+, 12.13 and the higher-level control 1 device 7, and also transmits test commands including the number of the signal processing circuit under test to the higher-level controller. When received from the control device 7, the signal processing circuit 1+, 12.1 of that number
3 and performs relay control of control information and transmission/reception data between the test signal processing circuit 11 and the host control device 7. The test circuit 8 includes a test signal processing circuit 11 having an output line 12 and an input line 13, rotary switches 16 and 17, and a driver that sends the signal output to the output line 12 to a common terminal of the rotary switch 16. 14 and rotary switch 1
Input the signal input from the common terminal of 7 I! 13, and a receiver 15 for outputting to the receiver 13. The connector 9 is
When installing the test circuit 8 to the main body, the output line 22+,
222, 223 and the respective contacts of the rotary switch 17 are connected, input lines 231,232, 233 and the respective contacts of the rotary switch 16 are connected, and the interface control circuit 6 and the test signal processing circuit 11 are connected.

Next, the operation of this embodiment will be explained.

(1) When no failure occurs When no failure occurs, the test circuit 8 is removed. The signal processing circuits 11, 12 and 13 operate according to the tiI1111I information sent from the host control device N7 via the interface control circuit 6, and the partner devices 211, 212.213 operate on the input lines 231, 232.2.
33, and input line 3 via receiver 5152.53.
It processes signals input from 1.32.33 and exchanges necessary data with the upper control device 7 via the interface control circuit 6. Then, a signal is output to the output lines 21, 22.23, and the output signal is transmitted to the driver 4142.4.
3 by the output lines 22+, 222.

223, and the other party devices 21+, 212.

213.

(2) When a failure occurs: If a failure such as a communication abnormality occurs and is detected in any of the signal processing circuits L+ and 12.13, the host control device 7 is notified of this via the interface control circuit 6. . For example, when a fault occurs and is detected in the signal processing circuit 1+, the higher-level device 7 causes the man-machine interface device 10 to type out a message informing the signal processing circuit 11 of the fault occurrence. After confirming this message, the maintenance person connects the output line 221.222.223 and each contact of the rotary switch 17 using the connector 9, and connects the input line 231,232.233.
The test circuit 8 is attached to the present signal processing equipment by connecting the contacts of the rotary switch 16 and the rotary switch 16, and the input port 123+ and the output line 221 are respectively selected by the rotary switches 16 and 17. Rotary switch 16.17
Since input port 123+ and output line 221 were selected respectively in signal processing circuit 11. Output 12+, driver 41
, output line 221.0 - tally switch 17° receiver 1
5. Input line 13. The test signal processing circuit 11 route and the test signal processing circuit 11° output line 12. Driver 1
4. Rotary switch 16, input line 231. Receiver 51. A route including the input line 31 and the signal processing circuit 11 is generated, and an opposing route is set between the signal processing circuit 11 and the test signal processing circuit 11. Next, the maintenance person accesses the upper IIJi from the man-machine interface device 10.
A command for testing the signal processing circuit 11 is input to the device 7. When the host control device 7 receives this command and sends a test command including the circuit number of the signal processing circuit 11 to the interface control circuit 6, the interface 11 circuit 6 tests the signal processing circuit 11 and the test signal processing circuit 1.
A relay 11HD of control information and transmission/reception data is performed between the signal processing circuit 11 and the higher-level control device 7, and signals are actually transmitted and received through the above-mentioned opposing route, and the signal processing circuit 11 and the test signal processing circuit 1
A communication test will be conducted between 10 people. The host control device N7 sends the results of this communication test to the man-machine interface device 10.
Type it out. The maintenance person looks at the typed-out test results, and if the test results are good, sends the other device @21
It is determined that the failure is caused by 1, and the test circuit 8 is removed to complete the test. On the other hand, if the test result is bad, the maintenance person determines that the signal processing circuit 11 is malfunctioning, replaces the signal processing circuit 11, and inputs a command to test the signal processing circuit 11 again. A test is performed, and WL verification is performed to determine whether the fault has been repaired based on the test results typed out from the man-machine interface H8t1°. After confirming that the fault has been repaired, the maintenance person removes the test circuit 8 and finishes the test.

〔Effect of the invention〕

As explained above, the present invention provides a removable test circuit for a signal processing circuit consisting of a test signal processing circuit and a rotary switch, and attaches the test circuit to the signal processing device when a fault occurs. By conducting a communication test between the signal processing circuit in which the fault has been detected and the test signal processing circuit, it is possible to easily determine whether the cause of the fault is in the signal processing circuit or in the other party's device. This has the effect of being able to confirm the repair after replacing the signal processing circuit without communicating with the other device, and since the test circuit is removable, one test circuit can be prepared for multiple signal processing devices. It also has the effect of reducing costs.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a signal processing device according to an embodiment of the present invention. 1+, 12.13... signal processing circuit, 21.22.
23... Output line, 31.32.33... Input line, 41.42.43... Driver, 51.52.53... Receiver, 6... Interface control circuit, 7... Upper control 1 device, 8...Test circuit, 9...] connector, 10...Man-machine interface device, 11...
Test signal processing circuit, 12... Output line, 13... Input line, 14... Driver, 15... Receiver, 16.17...-rotary switch, 21+, 212.213... Partner Equipment, 22 children, 2
22.223...Output line, 231 232.23
3...Input line.

Claims (1)

[Claims] 1. A signal processing circuit provided corresponding to each of a plurality of lines and having an output line and an input line connected to the line, and control between these signal processing circuits and a host control device. In a signal processing device having an interface control circuit that performs relay control of information and transmitted/received data, a test signal processing circuit having an output line and an input line, and an output line of the test signal processing circuit connected to a common terminal. 1st
and a second rotary switch to which the input line of the test signal processing circuit is connected to a common terminal, the test circuit being removable from the signal processing device; Connect the input line and each contact of the first rotary switch, and connect the output line of each signal processing circuit to the contact of the second rotary switch.
a connector that connects each contact of the rotary switch and connects the test signal processing circuit and the interface control circuit, the interface control circuit comprising:
When a test command including the number of the signal processing circuit under test is received from the higher-level control device, relay control of control information and transmission/reception data is performed between the signal processing circuit with that number, the test signal processing circuit, and the higher-level control device. A signal processing device characterized by: