Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual page 88

Duplex Unit
Indicator
R ACTIVE
Green
CPU STATUS
Red
Green
Indicator Status when
Power Is Turned ON
Duplex Unit indicators
DPL STATUS
L (Active) ACTIVE
CPU STATUS
R (Non-active) ACTIVE
CPU STATUS
52
Status Contents
Green The right CPU Unit is active
(ON) (ACT).
OFF The right CPU Unit is on
standby (STB).
Green The right CPU Unit is in
(ON) RUN or MONITOR Mode.
Green The right CPU Unit is being
(flashing) initialized for duplex opera-
tion, or the CPU is waiting.
Red (ON) Operation
switching
Red
error at the
(flashing)
right CPU
Unit
OFF The right CPU Unit is in
PROGRAM Mode.
The following table shows the status of Duplex Unit indicators when the power
supply is turned ON. In this example, the left (L) CPU Unit is set as the active
one (ACT.LEFT).
Being initialized (transferring
data, e.g., user program
immediately after startup)
Green (flashing)
Green (ON)
Green (flashing)
OFF
Green (flashing)
Note The items set in bold text in the table are the main ones to indicate the status.
The right CPU Unit is the active (i.e., controlling)
CPU Unit.
Either the right CPU Unit is on standby or the
CPU Unit is stopped.
The right CPU Unit is operating (i.e., in RUN or
MONITOR Mode).
Either the right CPU Unit is being initialized for
duplex operation (transferring or verifying duplex
data) or the CPU 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 right CPU Unit.
Other than One of the following operation switching errors
CPU error has occurred at the right CPU Unit.
Memory error
Program error
Cycle time overrun error
FALS instruction executed
Fatal Inner Board error (Process-control CPU
Units only)
The right CPU Unit is in PROGRAM Mode, or a
fatal error other than those indicated by a lit or
flashing red indicator has occurred.
Status at startup
In PROGRAM
Mode
Green (ON)
Green (ON)
OFF
OFF
OFF
Section 2-3
Description
Operating in Operating in
Duplex Mode Simplex Mode
Green (ON) OFF
Green (ON) Green (ON)
Green (ON) Green (ON)
OFF OFF
Green (ON) OFF