Errors During Initialization - Omron SYSMAC CS1W-LCB01 Operation Manual

Errors and Alarm Troubleshooting
Word Bit Name
A424 10 Partial Function
Block Database
(RAM) Error
During Simplex
Operation (non-
fatal error)
11 Backup Data
(Flash Mem-
ory) Error Flag
12 Specified EM
Bank Unusable
Error Flag
13 to Not used.
14
15 Automatic
Recovery from
Cycle Offset
Flag (nonfatal
error)
7-1-2

Errors during Initialization

LED Indicators LED
on front of Indicator
Loop on front of
Controller CPU Unit
RDY EXEC ERR/ALM
(See note.)
Not lit Not lit Undeter-
mined
Not lit Not lit Lit
Not lit Not lit Lit
224
Changes to 1 (turns ON) when a database (RAM) error
occurs for some function blocks or when an error occurs
while restoring data from the Memory Card using the sim-
ple backup function when mounted to CS1D CPU Units
and operating in simplex mode or when mounted to CS1-H
CPU Units.
This flag is set to 1 (ON) when the parameter data stored in
flash memory has been corrupted.
This flag is set to 1 (ON) when specified EM bank is not a
usable bank.
---
If something unforeseen causes the cycle to the right or left
to be offset, duplex initialization is automatically executed
to restore synchronous operation. The flag is set to 1 (ON)
when recovery is achieved.
The following table lists errors that can occur during the initial processing per-
formed after the power is turned ON or the Inner Board is restarted.
Problem Cause
Power sup- The correct internal
ply problem power supply is not
being supplied to the
Loop Controller.
The Loop Controller is
not mounted properly
in the CPU Unit.
The Loop Controller is
faulty.
Initial The Loop Controller
recognition was not recognized
error properly by the CPU
Unit.
(Inner
Board
Stopped
Error)
Inner A hardware error was
Board Error detected (in memory or
elsewhere) during the
self-diagnostic test.
Explanation
Status
Operation is None
stopped.
Operation is None
stopped.
Operation is None
stopped.
Section 7-1
Settings
1: Function block database
error during simplex opera-
tion or error while restoring
data.
0: Normal
1: Flash memory data
error
0: Normal
1: Cannot be used.
0: Can be used.
---
1: Duplex initialization exe-
cuted for synchronous dis-
placement recovery.
0: Normal
Error Corrective action
code
(Stored
in error
log.)
Check the power supply volt-
age and verify that the correct
voltage is being supplied. Also,
check the PLC's total current
consumption.
Mount the Loop Control Board
securely. Replace the Loop
Control Board if the error
recurs after the Board is
secured and power is turned
ON again.
Turn the power OFF and ON
again. If the error occurs with a
Loop Control Board, replace
the Loop Control Board. If the
error occurs with the Loop
Controller component of a
Loop-control CPU Unit,
replace the entire Loop-control
CPU Unit.
Mount the Loop Control Board
securely. Replace the Loop
Control Board if the error
recurs after the Board is
secured and power is turned
ON again. If the error occurs
with the Loop Controller com-
ponent of a Loop-control CPU
Unit, replace the entire Loop-
control CPU Unit.
Turn the power OFF and ON
again. Replace the Loop Con-
trol Board if the error recurs. If
the error occurs with the Loop
Controller component of a
Loop-control CPU Unit,
replace the entire Loop-control
CPU Unit.