Omron SYSMAC CS1W-SCB41-V1 Operation Manual page 338

Indicator Error Displays
Indicators
RDY ERR/ALM
CPU Unit
Lit Not lit
Flashing Flashing
Flashing Flashing
Serial Communications
Board Error Information
(A424)
Bit Flag
00 Fatal Inner Board
error WDT error
01 Inner Bus error
04 Non- Inner Board ser-
fatal vice failure
error
05 Cyclic monitor-
ing error
07 Routing table
error
08 System setting
error
09 Protocol data
error
10 Protocol macro
execution error
11 Error Log data
error
Possible cause
A Protocol Data File (BACKUP
was read (restored) from the CPU Unit's
Memory Card to the Board properly.
A protocol data write error has occurred or
protocol data has been destroyed.
There is no protocol data.
The Protocol Data File (BACKUP
restore operation failed when restoring pro-
tocol data from the CPU Unit's Memory
Card to the Board.
The Protocol Data Error Flag (bit A42409 in
CPU Unit's Auxiliary Area) will be turned
ON if the restore operation fails.
For Serial Communications Boards, refer to the following Auxiliary Area word
(A424) as well as the indicator displays shown on the previous page. When an
error occurs, the corresponding flag is turned ON.
Possible cause
The Board is faulty.
A bus error has occurred.
The TXD(236)/RXD(235)
instruction was sent using no-
protocol mode to a Board that
does not support no-protocol
communications (pre-Ver.1.2).
The Inner Bus access right
cannot be retained for more
than the specified time.
The routing tables are not set
correctly.
A system setting error has
occurred.
A protocol data checksum
error has occurred.
A syntax error has occurred
during protocol macro execu-
tion.
The service life of the
EEPROM has expired.
When a fatal error occurs, the ERR and ALM indicators on the CPU Unit will
light. When a non-fatal error occurs, the ERR and ALM indicators on the CPU
Unit will flash. Refer to the indicator error displays.
Note The ERR/ALM indicator will continue to flash even after the cause of a non-
fatal error has been removed for the Serial Communications Board. The indi-
cator can be stopped by clearing the error from a Programming Console or
@@
---
.PRM)
If the indicator status remains the same
when the protocol data is retransmitted,
replace the Board.
Transfer protocol data to the Board.
@@ Write (backup) the protocol data from the
.PRM)
Board to the Memory Card again and then
execute the restore operation again.
If the restore operation fails two times in
succession, use CX-Protocol to transfer the
protocol data to the Board.
Firmly secure the Board to the CPU Unit. If the
error persists when the Board is mounted to
another CPU Unit, replace the Board.
Firmly secure the Board to the CPU Unit. If the
error persists when the Board is mounted to
another CPU Unit, replace the Board.
Install a Board with Unit Ver. 1.2 or later and then
execute the TXD(236)/RXD(235) instruction.
CPU Unit and system load is too high. Review the
application.
Correct the routing tables and retransfer them.
Correct the Setup Area settings, cycle the power
supply, restart the Board, or restart the port, or
execute STUP(237).
If the error persists when protocol data is retrans-
mitted, replace the Board.
Correct the protocol data and retransfer it.
Try executing a correct sequence for the serial
port where the error is occurring or switch the
CPU Unit to PROGRAM mode and remove the
cause of the error.
If this error persists even if the power supply is
cycled, replace the Board.
Section 11-1
Remedy
Remedy
309