MODEL: IT40SW6F

IT40SW6F SPECIFICATIONS

ES-2434 Rev.0 Page 6/10

http://www.m-system.co.jp/

MODBUS FUNCTION CODES & SUPPORTED CODES

Modbus function codes are shown below.

■ DATA AND CONTROL FUNCTION

CODE

NAME

01

Read Coil Status

Digital output from the slave (read/write)

02

Read Input Status

Status of digital inputs to the slave (read only)

03

Read Holding Registers

General purpose register within the slave (read/write)

04

Read Input Registers

Collected data from the eld by the slave (read only)

05

Force Single Coil

Digital output from the slave (read/write)

06

Preset Single Register

General purpose register within the slave (read/write)

08

Diagnostics

15

Force Multiple Coils

Digital output from the slave (read/write)

16

Preset Multiple Registers

General purpose register within the slave (read/write)

■ EXCEPTION CODE

CODE

NAME

01

Illegal Function

Function code is not allowable for the slave

02

Illegal Data Address

Address is not available within the slave

03

Illegal Data Value

Data is not valid for the function

04

Slave Device Failure

05

Acknowledge

06

Slave Device Busy

07

Negative Acknowledge