Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual page 87

Duplex Unit
Indicator
L ACTIVE
Green
CPU STATUS
Red
Green
Status Contents
Green The left CPU Unit is active
(ON) (ACT).
OFF The left CPU Unit is on
standby (STB).
Green The left CPU Unit is in RUN
(ON) or MONITOR Mode.
Green The left CPU Unit is being
(flashing) initialized for duplex opera-
tion, or the CPU Unit is wait-
ing.
Red (ON) Operation
switching
Red
error at the
(flashing)
left CPU Unit
OFF The left CPU Unit is in PRO-
GRAM Mode.
The left CPU Unit is the active (i.e., controlling)
CPU Unit.
Either the left CPU Unit is on standby or the
CPU Unit has stopped.
The left CPU Unit is operating (i.e., in RUN or
MONITOR Mode).
Either the left CPU Unit is being initialized for
duplex operation (transferring or verifying duplex
data) or the CPU Unit is waiting.
While this indicator is flashing, neither of the
CPU Units will begin operation.
Note
1. If "Run Under Duplex Initial" in the PLC Set-
up is set to "Start running during initializa-
tion" only the active CPU Unit will start
running during duplex initialization.
2. This indicator will flash even if a duplex bus
error or a duplex verification error occurs
when the power is turned ON.
CPU error A CPU error has occurred at the left CPU Unit.
Other than One of the following operation switching errors
CPU error has occurred at the left CPU Unit.
Memory error
Program error
Cycle time overrun error
FALS instruction executed
Fatal Inner Board error (Process-control CPU
Units only)
The left CPU Unit is in PROGRAM Mode, or a
fatal error other than those indicated by a lit or
flashing red indicator has occurred.
Section 2-3
Description
51