MODEL: WL40W1F-DS2

WL40W1F SPECIFICATIONS

ES-9084 Rev.0 Page 5/7

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 Registers

General purpose register within the slave

(read / write)

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

MODBUS I/O ASSIGNMENT

ADDRESS

DATA TYPE

DATA

Coil (0X)

1 – 16

Reserved (unused)

Input (1X)

1 – 8

Reserved (unused)

9

Analog input error (input range error of analog input 1)

10

Analog input error (input range error of analog input 2)

11 – 16

Reserved (unused)

Input Register (3X)

1

I

Analog Input (analog input 1)

2

I

Analog Input (analog input 2)

3 – 16

–

Reserved (unused)

Holding Register (4X)

1 – 16

–

Reserved (unused)

Note: DO NOT access addresses other than mentioned above. Such access may cause problems such as inadequate operation.

■ DATA TYPE

I: Integer -32768 – +32767

■ STATUS

1 bit: indicates input status.

Input range error (Input range is out of the range -5 to +105% for scaling setting, or out of the range -32768 to +32767.)

0: Normal

1: Error

INPUT DATA DESCRIPTIONS

■ANALOG DATA (16 BITS)

0

15

When the scaling setting is initial value, the data is 0 to 10000 for input 0 to 100% setting.

If the input range is -5 to +105% (-500 to +10500) and that is out of range, the data is fixed to -500 or 10500.

Minus value is converted into negative values, represented in 2’s complements.