Function List - Protech Systems SI-W509 User Manual

4.2 Function List

Function
Code
0x01
0x02
0x04
0x05
0x41
0x42
Example:
1. Read Firmware Version
Command Packet:
ID
0x01
Return Data Packet:
ID CMD
0x01 0x41
2. Write and Switch to High at the channel 1 of Digital Output mode
Command Packet:
ID CMD
0x01 0x05
Return Data Packet:
ID CMD
0x01 0x05
3. Slave ID Address
Command Packet:
ID CMD
0x01 0x11
Return Data Packet:
ID CMD
0x01 0x11
SI-W509 SERIES USER MANUAL
Description
Request the ON/OFF Status of discrete coils
(Digital Output Channel)
Request the ON/OFF Status of discrete coils
(Digital Input Channel)
Read the sensor data of Analog Input
Register
Write the contents of discrete coil
(Digital Output Channel)
Read Function Settings
Write Function Settings
CMD
0x41
Length
0x0D
Address
0x10, 0x00
Length
0x01
CRC
0xC0, 0x2C
Length
0x01
Chapter 4 MODBUS RTU Protocol
Address
0x00, 0x00
Data
0x30 0x30 0x30
0x2D 0x30 0x31
0x2D 0x31 0x39
0x30 0x34 0x32 0x35
Value
0x00 0x01
Data
0x01
Data
0x01
Section
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
CRC
0x51, 0xCC
CRC
0xFD 0xF2
CRC
0x08, 0xCA
CRC
0xD1 0x89
CRC
0x91 0x8D
Page: 4-4