Function 0X41 - Read Module Setting - Protech Systems SI-W309 User Manual

4.2.5 Function 0x41 – Read Module Setting
This function code is used to read SI-W309 module setting.
Request
Offset
00 Slave ID address
01
02 ~ 03 Address of Holding
04 ~ 05
Response-1
The channel address is 0x0000.
Offset
00 Slave ID address
01 Function Code
02 Byte Count
03 ~ 0D Readback Data
0E ~ 0F CRC
Response-2
The channel address is 0x0010.
Offset
00 Slave ID address
01 Function Code
02 Byte Count
03 ~06 Readback Data
07 ~ 08 CRC
Response-3
The channel address is 0x0020.
Offset
00 Slave ID address
01 Function Code
02 Byte Count
03 Readback Data
04 ~ 05 CRC
Error Response
Offset
00 Slave ID address
01 Function Code
02 Data
03 ~ 04 CRC
SI-W309 SERIES USER MANUAL
Description
Function Code
Register
CRC
Description
Description
Description
Description
Chapter 4 MODBUS RTU Protocol
Counts
1 Byte 1 to 255
1 Byte 0x41
2 Bytes •
0x0000: Firmware Version
•
0x0010: Module Name
•
0x0020: Baud Rate Setting
2 Bytes Produced by utility.
Counts
1 Byte 1 to 255
1 Byte 0x41
1 Byte •
0x0B: Firmware Version
13Bytes The responded data for the CMD
2 Bytes Produced by firmware.
Counts
1 Byte 1 to 255
1 Byte 0x41
1 Byte •
0x04: Module Name
4 Bytes The responded data for the CMD
2 Bytes Produced by firmware.
Counts
1 Byte 1 to 255
1 Byte 0x41
1 Byte •
0x01: Baud Rate setting
1 Bytes The responded data for the CMD
2 Bytes Produced by firmware.
Counts
1 Byte 1 to 255
1 Byte 0xC1
1 Byte 0xCD: No Function
2 Bytes Produced by firmware.
Data
Data
Data
Data
Data
Page: 4-11