Troubleshooting Flowcharts - Omron CQM1H - PROGRAM Programming Manual

Troubleshooting Flowcharts

Note
Clearing the Error Log
8-7 Troubleshooting Flowcharts
Main Check
3. 2 to F Hex: You can disable the log so that no records are stored.
The default setting is the first method. Refer to Error Log Settings on page 17
for details on the PC Setup for the error log.
1. If a Memory Cassette with a clock (RTC) is not used, the date and time of
error occurrence will be "0000."
2. Error will be recorded in the error log even if DM 6144 to DM 6655 are
write-protected by turning ON pin 1 on the DIP switch on the front side of
the CPU Unit.
To clear the entire error log, turn ON SR 25214 from a Programming Device
or using an instruction. (After the error log has been cleared, SR 25214 will
turn OFF automatically.)
Use the following flowcharts to troubleshoot errors that occur during opera-
tion.
Error
Power indicator lit?
Lit
RUN indicator lit?
Lit
ERR/ALM indicator
flashing?
Not lit
Is I/O sequence
normal?
Normal
Operating
environment
normal?
Normal
Replace the CPU
Unit.
Note Always turn OFF the power to the PC before replacing Units, batteries, wiring,
or cables.
Not lit
Check power supply.
Not lit
Check for fatal errors.
Flashing
Check for non-fatal errors.
Not normal
Check I/O.
Not normal
Check operating environment.
Section 8-7
(See page 506.)
(See page 507.)
(See page 508.)
(See page 509.)
(See page 511.)
505