Mitsubishi Electric MELSEC iQ-R Series User Manual page 444

Error code Error definition and causes
F000H to F1F0H The data size specified in UCMM
communications exceeds the
allowable setting range.
*1 For values that can be set in request areas, refer to the following.
Page 498 Class3/UCMM communication area
*2 For values that can be set for arguments in module function blocks, refer to the following.
 MELSEC iQ-R EtherNet/IP Function Block Reference
19 LIST OF ERROR CODES
442
19.4 Error Codes for the Message Communication Function (Client)
Action
Take the following action according to the value set in FxxxH (xxx = 000 to 1F0).
xxx = 000: The data size cannot be set to "0" for UCMM tag communications.
Check the value set for the data size.
Other than xxx = 000: A value has been set that exceeds the allowable data size value for UCMM
message communications/UCMM tag communications.
The maximum value that can be set for the data size is xxx. Please check the data size set value to
ensure it is valid. For allowable data size settings for UCMM communications, refer to the following.
Page 503 Data Size (Un\G7751708)