Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual page 445

Error Processing
Duplication
Verification Errors
(Duplex CPU Systems
Only)
DPL STATUS indicator flashes red.
Duplex verification error (to Simplex Mode)
Check
A31714 (no active
CPU Unit) from Programming
Device. ON or
OFF?
OFF
Check
A31707/A31710
from Programming Device.
Either one
ON?
Both OFF
Check
A31708 from
Programming Device.
ON?
OFF
Check A31713 (Parameter Area verification
error) and A31715 (user program verification
error) from Programming Device.
Transfer the user program and parameter
area data (PLC Setup, I/O tables, etc.) to
active CPU Unit.
Press the initialization button.
DPL
STATUS indicator
still flashing red?
Yes
Replace the Duplex Unit.
ON
Turn the power supply OFF.
Be sure the active CPU Unit switch is set
and do not use the Simple Backup Mode.
Turn the power supply back ON.
One or more ON
Turn OFF the power supply.
Check the Inner Board model numbers
and installation if A31710 is ON or
replace the CPU Unit if A31707 is ON.
Turn the power supply back ON.
ON
Replace the standby CPU Unit with a
CPU of a unit version higher than that of
the active CPU Unit or do not use any
functions on the active CPU Unit not
supported by the standby CPU Unit.
No
Operation should restart in Duplex Mode.
Section 10-2
409