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Diagnostics 7.
7-1
7. Diagnostics
7.1 Preliminary checks
Check power supply, ground and I/O cables are wired correctly.
Turn the power supply on. Check the power LED is lit. Down load a small
test program into the PC using a handheld programmer or MEDOC. Verify
the program to ensure it has been written to the PC correctly. Using the pro-
gramming device forcibly turn ON/OFF each output. Check the output LEDs
for operation.
Put the PC into RUN. Check the RUN LED is lit. Check the previously down
loaded program works correctly. Once all check are complete take the PC
out of run and turn OFF the power supply.
During this testing stage take extrem care not to touch any live or hazardous
parts.
POWER
RUN
BATT
ERROR
POWER
RUN
BATT
ERROR
POWER
RUN
BATT
ERROR
FX2NC Series Programmable Controllers