Return Slave Nak Count (Sub-Command Code: 0X10) - Mitsubishi FX3U Series User Manual

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

7.11.12 Return slave NAK count (sub-command code: 0x10)

Reads out the number of NAK responses to the master.
The FX-Series MODBUS Communication ADP always returns "0".
1) Request message format (Master → Slave)
2) Response message format (Slave → Master)
(When completed normally)
*1. Refer to Chapter 6 for the relevant counts, count clear methods and precautions.
(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.
68
Function code Sub-function code
Function
Sub-function code
code (0010
(08 )
H
(H)
Function code Sub-function code
Function
Sub-function code
code
(0010
(08 )
H
(H)
Function code
Function
code
(88
Data
)
(0000
H
(L) (H)
Data
Slave NAK count value
)
(0000
H
(L) (H)
Data
Exception
code *
2
)
H
7 MODBUS Standard Commands
7.11 Diagnostics (Command Code: 0x08)
)
H
(L)
1
) *
H
(L)