Appendix 3 Error Code; Error Code System; Operation When An Error Occurs - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

Appendix 3
The CPU module stores error code in special register (SD) upon detection of an error using the self-diagnostics function. The
error details and cause can be identified by checking the error code. The error code can be checked in either of the following
ways.
• Module diagnostics of engineering tool (MELSEC iQ-F FX5 User's Manual (Startup))
• Special register (SD0 (latest self-diagnostics error code), SD10 to SD25 (self-diagnostics error code)) (Page 275
Special Register List)
This section describes errors that may occur in the CPU module and actions to be taken for the errors.

Error code system

All error codes are given in hexadecimal format (4 digits) (16-bit unsigned integer). The following table lists the error detection
type and the error code ranges.
Error detection type
Detection by the self-diagnostics function of each module
Detected during communication between CPU modules
Detailed information
Upon detection of error through self-diagnostics function, the detailed information of the error cause is stored all together. The
following detailed information is added to each error code (up to two types of information are stored for each error code. The
types differ depending on error code.) Detailed information 1 to 2 of the latest error code(s) can be checked with special
register (SD).
Detailed information Item
Detailed information 1 Error location information
Drive/File information
Parameter information
System configuration information
Frequency information
Time information
Detailed information 2 Drive/File information
Annunciator information
Parameter information
System configuration information
*1 The step No, which is displayed in the program position information, is the step No that is counted from the head of the file. It might be
sometimes different from the step No of the program which is displayed in error jump of engineering tool.

Operation when an error occurs

There are two types of errors: continuation errors and stop errors.
Stop error
If a stop error occurs, the CPU module stops its operation and the operating state will be in STOP. Modules can communicate
with the CPU module even after a stop error occurs in the CPU module.
Continuation error
If a continuation error occurs, the CPU module continues its operation. (The operating state will remain the same.)
Error Code
Range
0001H to 3FFFH
4000H to 4FFFH
7000H to 7FFFH
C000H to CFFFH
D000H to DFFFH
Description
*1
Information on the location in a program
Information on drive names and file names
The information for the parameter, such as parameter storage location and parameter
type, is indicated.
The information for the system configuration, such as I/O No is indicated.
This section describes the information for frequency such as the write frequency into
memory.
The information for the time is indicated.
Information on drive names and file names
Information about annunciators
The information for the parameter, such as parameter storage location and parameter
type, is indicated.
The information for the system configuration, such as I/O No is indicated.
Description
Error code specific to each module, such as self-diagnostics errors
CPU module error
MELSEC iQ-F FX5 User's Manual (Serial Communication)
MELSEC iQ-F FX5 User's Manual (MODBUS Communication)
MELSEC iQ-F FX5 User's Manual (Ethernet Communication)
MELSEC iQ-F FX5 User's Manual (CC-Link IE)
APPENDIX
321

Appendix 3 Error Code

A