LS Industrial Systems XGF-HO2A - Counter Operation Error

Chapter 8 Troubleshooting
8-5
8.3.3 Counter operation error
Counter operation error
A-phase LED
blinks?
Power module’s
voltage normal?
H/W defect
Check and remove
power module
Counter operation
enabled
Signal On?
External wiring
normal?
I/O signal
correctly arranged?
H/W defect
Any foreign materials
inside?
Check and correct
external wiring
Correct program to let counter operation
enabled signal On.
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
2-phase operation
mode?
A, B LED On when
voltage directly input on
counter input
terminal?
No
Correct program to set exact
I/O signal.
No
B-phase LED
blinks?
No
Yes
Yes
Slot No. setting
correct?
Yes
Correct program for accurate slot
No. setting.
No
Remove foreign materials.
Yes
Yes
No