Mitsubishi Electric MELSEC iQ-R Series User Manual page 496

Operating status
■Class1 connection error status (Un\G7734528 to Un\G7735551)
This area stores the error code of the error that occurred during Class1 communications for each connection number. (0 is
stored when communications are normal.)
For details on the error codes, refer to the following. (Unit: Double word)
Page 435 Error Codes When a Connection Error Occurs
Address
Un\G7734528 to Un\G7734529
Un\G7734530 to Un\G7734531

Un\G7735038 to Un\G7735039
Un\G7735040 to Un\G7735041
Un\G7735042 to Un\G7735043

Un\G7735550 to Un\G7735551
Precautions
When reading the Class1 connection error status, note the following points to prevent data inconsistency in error codes.
• When reading the status using the BMOV/FROM instruction, specify an even number for the read size. Or, use the DMOV/
DFROM instruction to read in double-word units.
• Specify an even number for the start address.
APPX
494
Appendix 3 Buffer Memory
Input/output Description
Input Error code for connection No.1 input side (when receiving)
Input Error code for connection No.2 input side (when receiving)
 
Input Error code for connection No.256 input side (when receiving)
Output Error code for No.1 output side (when sending)
Output Error code for No.2 output side (when sending)
 
Output Error code for No.256 output side (when sending)