Omron SYSMAC CS1W-LCB01 Operation Manual page 257

Errors and Alarm Troubleshooting
Word Bit Name
A424 00 to Inner Board
12 Error Informa-
tion
00 Inner Board
WDT Error Flag
(fatal error)
01 Inner Board Bus
Error Flag
(fatal error)
02 Cyclic Monitor
Error Flag
(fatal error)
03 Flash Memory
Data Error or All
Function Block
Database
(RAM) Error
during Duplex
Operation Flag
(fatal error)
04 Incompatible
CPU Unit Error
Flag
(non-fatal error)
05 Cyclic Monitor
Error Flag
(fatal error)
06 CPU Bus Unit
Settings Area
Error Flag
07 Routing Table
Error Flag
08 Loop Controller
High Load Flag
(non-fatal error)
09 Operation Cycle
Error Flag (non-
fatal error) (for
Process-control
CPU Unit
(CS1D-
CPU@@P) only)
(2) If an error occurs in a Loop Controller, details on the cause of the error
will be stored in A424 (Inner Board Error Information).
Explanation
The following flags provide details on Inner Board errors
(errors common to all Inner Boards as well as errors spe-
cific to Loop Controllers.)
This flag is set to 1 (ON) if the Loop Controller is faulty.
This flag is set to 1 (ON) if an Inner Board Bus Error has
occurred.
A cyclic monitor error was detected in the Loop Controller
of the Process CPU Unit (CS1D-CPU@@P).
This flag is set to 1 (ON) when a Cyclic Monitor Error is
detected, i.e., the cyclic area's access right token was not
returned to the Loop Controller within the cyclic monitor
time.
This flag is set to 1 (ON) in the situations outlined below.
Use the CX-Process Tool software to download all function
blocks (LCB/LCU unit). Alternatively, backup to flash mem-
ory.
When there is a flash memory data error during the data
check at a cold start.
A database (RAM) error occurred for all function blocks
during operation in duplex mode when mounted to a CS1D
CPU Unit.
This flag is set to 1 (ON) when the Loop Control Board is
mounted in a CPU Unit other than a CS1-H CPU Unit.
Note: The CS1 CPU Units without the "-H" suffix do not
support the Loop Control Board.
A cyclic monitor error is detected in the CS-series Loop
Control Board (CS1W-LCB01/LCB 05) or Loop-control
CPU Unit (CJ1G-CPU@@P).
This flag is set to 1 (ON) when a Cyclic Monitor Error is
detected, i.e., the cyclic area's access right token was not
returned to the Loop Controller within the cyclic monitor
time.
(Loop Control Units only.)
(Loop Control Units only.)
This flag is set to 1 (ON) when the LCB load rate exceeds
80% for three consecutive cycles. If this error occurs,
extend the operation cycles of function blocks that can be
extended. If the error recurs after extending the operation
cycles, add a Loop Control Unit and divert some of the load
to that Unit.
This flag is set to 1 (ON) when the Loop Controller's opera-
tion cycle is inaccurate because the cycle time is too long
(when the CPU Unit's cycle time is more than 20% of the
minimum operation cycle) during duplex mode operation
when mounted in a CS1D CPU Unit.
Section 7-1
Settings
---
1: Inner Board WDT Error
0: Normal
1: Inner Board Bus Error
0: Normal
1: Cyclic Monitor Error
0: Normal
1: Flash Memory Data
Error or All Function Block
Database (RAM) Error
0: Flash memory normal
and all function block data-
base (RAM) normal during
duplex operation
1: The Loop Control Board
is mounted in a CPU Unit
that does not support the
Board.
The EM file memory is
being created or the EM
does not exist.
0: Normal
1: Cyclic Monitor Error
0: Normal
---
---
1: Loop Controller running
at a high load rate
0: Normal
1: Operation cycle error
0: Normal
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