Omron SYSMAC C Series

Maintenance
and
troubleshooting
Failure flowchart
For PC
RUN indicator off*
ERROR indicator lit?
Use programming console
to identify error
1
*POWER indicator also on
NO
RUN or MONITOR
mode?
Rewrite program in
PROGRAM mode; clear
error message
Set RUN or MONITOR mode
Memory failure?
RUN indicator
NO
illuminates?
ERROR indicator off?
Set PROGRAM mode; add
END instruction at end of
program; clear error message|
ERROR indicator off?
Check cable connection of
CPU and expansion [/O rack;
correct; clear error message
VO bus failure?
ERROR indicator off?
Check program; find and
correct error; reapply power
RUN indicator lit? wes
dicator lit?
Correctly insert RAM/EPROM|
chip in IC socket
RAM/EPROM,
hip correctly inserted ?,
Retum to “General flowchart”
YES
RUN indicator lit?
DIP switch setting
correct?
Correct DIP switch setting
RUN indicator lit?
Replace CPU END