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3.8 MODBUS Protocol
1. Servo single register value setting：
Sending
Hexadecimal
Station No.
01
Function
06
code
Starting
00
address H
Starting
01
address L
Set value H
00
Set value L
05
CRCH
**
CRCL
**
Eg：Set P0-01 data
sending data：
Reading correct feedback data：
Reading error feedback data：
2. Continuously setting servo multiple register values：
Sending
Hexadecimal
Station No.
Function code
Pin
Name
1
3
4
5
8
2
Servo correct feedback
Hexadecimal
Station No.
Function
code
Starting
address H
Starting
address L
Set value H
Set value L
CRCH
CRCL
Use the default parameters of the servo the station number is 1
01 06 00 01 00 05 CRCH CRCL
01 06 00 01 00 05 CRCH CRCL
01 86 ** CRCH CRCL
Servo correct feedback
Hexadecimal
01
Station No.
10
Function code
Instruction
RS485-A
A
B
RS485-B
RS232 receiving
terminal
RXD
RS232 sending
terminal
TXD
GND
RS232 ground
GND
Downloader
01
Station No.
06
Function
code|0x80
00
Error code
01
CRCH
00
CRCL
05
**
**
01
Station No.
06
Function
code|0x80
14
Servo error feedback
Hexadecimal
01
86
**
**
**
//** error code
Servo error feedback
Hexadecimal
01
86
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