Read Exception Status (Command Code: 0X07) - Mitsubishi FX3U Series User Manual

FX Series Programmable Controllers
3U
User's Manual - MODBUS Serial Communication Edition
7.10

Read Exception Status (Command Code: 0x07)

Reads error status.
1) Request message format (Master → Slave)
2) Response message format (Slave → Master)
(When completed normally)
*1. Vendor specific data.
(When completed with an error)
*2. Exception and error codes are stored in special data registers and special auxiliary relays in the case
of error completion. Refer to Chapter 6 for storage location, confirmation methods, and other detailed
contents.
56
Function code
Function code
(07 )
H
Function code
Data
Function
Error
code
*1
information
(07 )
H
Function code
Data
Function
Exception
code
code *
2
(87 )
H
7 MODBUS Standard Commands
7.10 Read Exception Status (Command Code: 0x07)