Sub-Fc04 (0X04): Set The Modbus Unit Id (Net Id) - ICP DAS USA ACS-20B-MRTU User Manual

5.2.2 Sub-FC04 (0x04): Set the Modbus Unit ID (Net ID)

Byte Description
order
00 Address
01 FC
02 Sub-FC
03 New
Address
04 [reserved]
Byte Description
order
00 Address
01 FC
02 Sub-FC
03 Result
04 [reserved]
Note: This parameter setting is effective after power cycling the module,
ACS-20B(W)-MRTU User Manual
Copyright © 2021 ICP DAS Co., Ltd. All Rights Reserved
Table 5-7: FC100-Sub-FC04 Request
Size Value
1 Byte 1 ~ 247 (Net ID)
1 Byte 0x64
1 Byte 0x04
1 Byte 1 ~ 247 (Net ID)
1 Byte 0x00
Table 5-8: FC100-Sub-FC04 Response
Size Value
1 Byte 1 ~ 247 (Net ID)
1 Byte 0x64
1 Byte 0x04
1 Byte 0x00 => OK,
Others => Error
1 Byte 0x00
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