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Chapter 8. TROUBLESHOOTING
8 - 3
8.2.2
Counter Operations Do Not Execute.
①
①
Counter operations do not
execute.
Is the voltage of
power supply
module Normal?
Change after checking power
module?
Is the Phase A
LED flickering?
Is external
wiring?
normal ?
When voltage
given on
counter input
terminal, is A,B
phase ?
Correct after checking
external wiring
HW Fault
Is turned the
counter operation
enable signal On?
Correct program to turn on the count
operation enables signal.
Is input/output signal
allocation?
Correct program as normal in/output
signal
Is 2-Phase
operating mode?
Phase B LED
flickering?
Is Slot No. correctly
set?
Correct program to set correct
Slot No
Entered any foreign
material when
handling?
Remove the foreign material.
HW Fault
No
Yes
No
Yes
No
Yes
Yes
No
Yes
No
No
Yes
Yes
Yes
No
No
Yes
No
Yes
No