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12.1 Error Code List
12.1.1 Error codes
12.1.1 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 Table 12.1.
*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 10000)
• Moderate error: Errors that may cause the CPU module to stop the operation, e.g., WDT error.
(Error code: 1300 to 10000)
• Major error: Errors that may cause the CPU module to stop the operation, e.g., RAM error.
(Error code: 1000 to 1299)
Determine the error level, i.e. whether the operation can be continued or stopped, by referring to
"Operating Statuses of CPU" described in Section 12.1.3 to 12.1.9 "Error Code List"
*2: When detected an error code without being noted in the reference table, please contact your local
Mitsubishi representive.
12.1.2 Reading an error code
When an error occurs, reading an error code, error message or the like can be executed with GX
Developer.
For the details of the operation method, refer to the operating manual for GX Developer.
Table12.1Reference destination
Error detection pattern
Error detection
location
Error code Reference
Detection by the self
diagnostics function of CPU
module
CPU module
1000 to 10000
*1*2
Section 12.1.3 to 12.1.9
Detection at communication
with CPU module
CPU module 4000H to 4FFFH
• QCPU User’s Manual (Hardware design,
Maintenance and Inspection)
Serial communication
module, etc.
7000H to 7FFFH Serial Communication User’s Manual, etc.
CC-Link module B000H to BFFFH
CC-Link System Master/Local Module User’s
Manual
Ethernet module C000
H to CFFFH Ethernet Interface Module User’s Manual
CC-Link IE controller
network
E000H to EFFFH
CC-Link IE Controller Network Reference
Manual
MELSECNET/H
network module
F000H to FFFFH
• MELSECNET/H mode
Q Corresponding MELSECNET/H Network
System Reference Manual
• MELSECNET/10 mode
For QnA/Q4AR MELSECNET/10 Network
System Reference Manual