Rtu framing, Table 5.9, Response sample – RLE LD1500 V.3.1 User Manual

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LD1500 User Guide

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Modbus Communication

5.3. RTU

Framing

The example below shows a typical Query/Response from a LD1500 module.

Slave address 2 responds to Function Code 4 with 6 bytes of hexadecimal data and ends with

CRC16 checksum.

Register Values:

40001 = 0000 (hex)

40002 = 0000 (hex)

40003 = 0001 (hex)

Table 5.9 Response Sample

Slave

Address

Function

Code

Count

Bytes of

Data

Register

Data

MSB LSB

Register

Data

MSB LSB

Register

Data

MSB LSB

CRC16

LSB

CRC16

MSB