RLE LD2100 V.2.6 - Manual (Page 79)

rletech.com LD2100 User Guide 79
5 Modbus Communication
5.3. RTU Framing
The example below shows a typical Query/Response from an LD2100 module.
Slave address 2 responds to Function Code 4 with six bytes of hexadecimal data and ends with
CRC16 checksum.
Register Values:
40001 = 0000 (hex)
40002 = 0000 (hex)
40003 = 0001 (hex)
Table 5.14 Response Sample
Slave
Address
Function
Code
Count Bytes
of Data
Register
Data
Msb Lsb
Register
Data
Msb Lsb
Register
Data
Msb Lsb
CRC
16
“Lsb”
CRC
126
“Msb”
02 04 06 00 00 00 00 00 01 B5 A3