User`s manual

Directions for use
7-28
7
(4) Check flow 4
This flow shows the checking procedure in the event of abnormality of input signal not detected by the
self-diagnosis of the JW-32CUM1.
Example of the error
- All inputs of specific input module fail to be turned ON.
- Specific input fails to be turned ON (OFF).
- Among input signals of a same input module, operation of a certain input signal affects other
input signal.
Countermeasure: Error input signal
1 Measure the voltage between the corresponding input terminal of the input module and the
common terminal using a tester.
If supply voltage is applied between terminals: ON
If supply voltage is not applied between terminals: OFF
2 Check the state of LED of input module.
3 Connect hand-held programmer, and check ON/OFF by monitoring the data memory (input
relay) corresponding to the abnormal input.
In case of 1=2=3 Check the external wiring and power supply.
In case of the others Exchange the input module.
The flow of input signal
JW-32CUM1 Input module
Memory
I/F
circuit
Hand-held programmer
2
3
2
LED
1
Common terminal
Input terminal