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12.3 Error Code List
12.3.1 Error codes
12
TROUBLESHOOTING
12.3.1 Error codes
Errors are detected by the self diagnostic function of the CPU module or detected during
communication with the CPU module.
The relation between the error detection pattern, error detection location and error code is
shown in the following table.
* 1: CPU module error codes are classified into minor, moderate, major errors as shown below.
•Minor error: Errors that may allow the CPU module to continue the operation, e.g., battery error.
(Error code: 1300 to 9000)
•Moderate error: Errors that may cause the CPU module to stop the operation, e.g., WDT error.
(Error code: 1300 to 9000)
•Major error: Errors that may cause the CPU module to stop the operation, e.g., RAM error.
(Error code: 1000 to 1299)
"Errors that may allow the CPU module to continue the operation" and "Errors that may cause the CPU module to
stop the operation" can be distinguished using "Operating Statuses of CPU" of Section 12.3.3 to 12.3.8 Error
code list.
Table12.3 The relation between the error detection pattern, error detection location and error code
Error detection pattern
Error detection
location
Error code Reference
Detection by the self
diagnostics function of
CPU module
CPU module
1000 to 9000
*1
Section 12.3.3 to 12.3.8
Detection at
communication with CPU
module
CPU module 4000
H to 4FFFH Section 12.5
CC-Link Safety
master module
B000
H to BFFFH
CC-Link Safety System Master
Module User's Manual
Ethernet module C000
H to CFFFH
Ethernet Interface Module User’s
Manual
CC-Link IE Field
Network master/local
module (with safety
functions)
D000
H to DFFFH
MELSEC-QS CC-Link IE Field
Network Master/Local Module
User's Manual
CC-Link IE Controller
Network module
E000
H to EFFFH
CC-Link IE Controller Network
Reference Manual
MELSECNET/H
module
F000
H to FFFFH
MELSECNET/H Network System
Reference Manual