Mitsubishi Electric MELSEC iQ-R Series User Manual page 129

Error code Error name
4B04H Target module error
Error codes of CC-Link IE Field Network (D000H to DFFFH)
For the error messages, error details and causes, and action of the error codes (D000H to DFFFH), refer to the following.
 MELSEC iQ-R CC-Link IE Field Network User's Manual (Application)
Error details and cause
The specified connection destination (request
destination module I/O number) is not supported.
Action
An invalid value is set as the start I/O number of the
connection target module. Set the start I/O number
of the target module correctly, and retry data
communications.
4 TROUBLESHOOTING
4.7 Error Codes
4
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