Omron CV500 Installation Manual page 96

Troubleshooting Flowcharts
Fault Check Flowchart
RUN indicator not lit
A
RUN or
MONITOR
mode?
YES
YES
ERROR indi-
cator lights?
NO
Connect peripheral de-
vice and check error
NO
Can Online
mode be set?
YES
YES
WDT indica-
tor lights?
NO
Check word A306
A30600 ON?
OFF
A30601 ON?
OFF
A30602 ON?
OFF
A30603 ON?
OFF
B
At this time, it is assumed that the POWER indicator is normally
lit.
NO
Set RUN or MONITOR
mode
(To next page)
C
Turn power OFF and ON
again
Can Online
mode be set?
YES
WDT indica-
tor lights?
NO
B
ON
START input OFF
ON
I/O verify error*
ON
SYSMAC BUS terminator
missing
ON
SYSMAC BUS/2 termina-
tor missing**
RUN indica-
tor lights?
YES
End
NO
YES
Replace Unit
Close START input termi-
nals of Power Supply Unit
Unit is disconnected. Iden-
tify erroneous Unit by veri-
fying I/O table, mount Unit
correctly, and then create
I/O table
Check terminator and
Slave Rack Power Supply
Unit of SYSMAC BUS
Check terminator and
Slave Rack Power Supply
Unit of SYSMAC BUS/2
Section 5-2
B
NO
A
*When an I/O verifica-
tion error is specified
as a fatal error in the
PC Setup.
**This error does not
occur when disabled
as an error in the PC
Setup.
83