Desired Input Is Not Obtained: Checking When The Input Does Not Turn On / Off; If The Alarm Led Is Lit On The Expansion Unit - Panasonic GM1 Series Reference Manual

10.3 What to Do If an Error Occurs
If the voltage is properly applied to the load, there is probably an abnormality in the load.
If the voltage is not applied to the load, there is probably an abnormality in the output
section of the unit.
4.
Using the GM Programmer, check the monitor function by forcibly setting or resetting the
output.
If the output LED of the unit changes, it is possible that the output has been overwritten in
the program.
If the LED does not change, there is probably an abnormality in the output section of the
unit.
10.3.5 Desired Input Is Not Obtained: Checking when the Input Does Not Turn
ON / OFF
■
Condition
Both software factors such as program or I/O allocation and hardware factors such as wiring or
power supply can be assumed.
■
Solution
1.
If the input display LED is unlit, proceed to the following step. If it is lit, proceed to step 4.
2.
Recheck the wiring of the input devices for loose terminals, etc.
3.
Check if the voltage is properly applied to the input terminals.
If the voltage is properly applied to the input terminals, there is probably an abnormality in
the unit's input part.
If the voltage is not applied to the input terminal, there is probably an abnormality in the
power supply or the input device.
4.
Using the GM Programmer, monitor the input state.
If the monitored state is OFF, there is probably an abnormality with the input unit.
If the monitored state is ON, there is probably an abnormality with the program.

10.3.6 If the ALARM LED Is Lit on the Expansion Unit

■
Condition
If the ALARM LED is lit on the expansion unit, there may be a system failure.
■
Solution
1.
Turn the system OFF and then ON.
2.
If the system is not reset, there may be a hardware failure. Please consult your Panasonic
representative.
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