Omron SYSMAC CS1W-CLK13 Operation Manual page 309

Troubleshooting for Duplex Communications Units
Troubleshooting for Errors at Startup
Active Unit Standby Unit
RUN ERC RUN
Lit Not lit Flashing Not lit
Not lit Not lit Not lit
Lit Not lit Lit
Not lit Not lit Flashing Not lit
(ERH is
lit)
Lit Not lit Not lit
Lit Not lit Not lit
(ERH is
lit)
Lit Not lit Not lit
(ERH is
lit)
286
Status area
(Auxiliary Area)
ERC
---
Not lit ---
---
---
CPU Bus Unit Error Flag
(A40207)
I/O bus error B:
I/O Bus Error Flag
(A40114)
I/O Bus Error Rack
Number (0B Hex is
stored in bits 8 to 15 of
A404)
Not lit (CPU on standby)
Duplex Communications
Setting Error Flags
(A435)
CPU Bus Unit Setting
Error Flag (A40203)
Not lit Duplex Communications
(ERH is Setting Error Flags
lit) (A435)
CPU Bus Unit Setting
Error Flag (A40203)
Not lit CPU Bus Unit
Duplication Error Flag
(ERH is
(A40113)
lit)
Not lit Duplex Communications
Setting Error Flags
(A435)
CPU Bus Unit Setting
Error Flag (A40203)
CPU Bus Unit Setting
Error Flag (A40207)
Probable cause
Both the active and ---
standby Units are
operating normally.
Power is not being Check the power supply
supplied correctly to the voltage and supply at the
PLC. recommended voltage.
The Power Supply Unit Use CS1D Power Supply
is not a CS1D Power Units for CS1D Systems.
Supply Unit.
The Controller Link Unit Secure the Controller
has become loose. Link Unit firmly.
There were errors in If the same problem
both active and standby occurs when the Units
Units. are mounted on another
PLC, replace them.
The wrong Expansion Replace the Expansion
Backplane is connected. Backplane with a CS1D
Expansion Backplane
(supports online Unit
replacement).
4 or more pairs of The maximum number of
Communications Units pairs of Communications
are set for duplex Units mounted on 1
operation. CS1D PLC that can be
set for duplex operation
is 3.
The active Controller Set the active Controller
Link Unit's unit number is Link Unit's unit number to
set incorrectly. the same number as the
standby Unit and reset
the power.
The active Controller Mount a duplex-
Link Unit does not compatible Controller
support duplex Link Unit (CS1W-CLK13,
operation. CS1W-CLK12-V1,
CS1W-CLK53, or CS1W-
CLK52-V1).
The standby Controller Set the standby
Link Unit's unit number is Controller Link Unit's unit
set incorrectly. number to the same
number as the active Unit
and reset the power.
The duplex settings in Make the duplex settings
the PLC Setup have not for the relevant Unit
been made. under Communication
Unit Duplex Setting in the
PLC Setup using CX-
Programmer.
The active Controller Mount a duplex-
Link Unit does not compatible Controller
support duplex Link Unit (CS1W-CLK13,
operation. CS1W-CLK12-V1,
CS1W-CLK53, or CS1W-
CLK52-V1).
Section 10-6
Probable remedy