User Manual

3 Functions

The following functions are available for the device:

3.1 Read n words

This function reads n (n≤32) words, starting from a defined address.

Data request

Response

Example Read the two controller setpoints

Word address = 0x3100 (setpoint W1)

Data request:

Response:

Function number Function

0x03 or 0x04 Read n words

0x06 Write one word

0x10 Write n words

Slave

address

Function

0x03 or 0x04

Address

first word

Word

number

(max. 32)

Checksum

CRC16

1 byte 1 byte 2 bytes 2 bytes 2 bytes

Slave

address

Function

0x03 or 0x04

Number

of bytes

read

Word

value(s)

Checksum

CRC16

1 byte 1 byte 1 byte x byte(s) 2 bytes

01 03 31 00 00 04 4AF5

01 03 08 0000 41C8 0000 4120 4A9E

Setpoint 1

(25.0)

Setpoint 2

(10.0)