Modbus Common Function Code - Kalatec Automacao STR6-RS485 User Manual

6.4 MODBUS Common function codes
6.4.1 Read holding register command 0x03
Host -> Slave Data
Device
address
01
Slave -> Host Data
Device
address
01
The return current value of the slave (register address 00) is 2700mA.
6.4.2 Write single register command 0x06
Host -> Slave Data
Device
address
01
Slave -> Host Data
Device
address
01
Write 1600 pulse/s to the lower 16bit of the slave speed (register address 64).
Function Register
code address
03 00 00
Function Number of
code bytes
returned
03 02
Function Register
code address
06 00 40
Function Register
code address
06 00 40
Number of
registers CRC check
read
00 01 85
Register CRC check
count
0A 8C BF
Write data CRC check
06 40 8A
Write data CRC check
06 40 8A
0A
41
4E
4E
22