Chengdu Ebyte Electronic Technology Co.,Ltd
E851-RTU(4440-ETH) User Manual
Copyright ©2012–2019, Chengdu Ebyte Electronic Technology Co.,Ltd
25
Modbus RTU protocol writes Socket registers:
Receive
01
10
00 63
00 18
30 1D
Device ModBus address
Function code
address
Register Length
CRC check code
Modbus TCP protocol writes Socket registers:
Receive
00 01
00 00
00 06
01
10
00 63
00 18
Transmission
identifier
Protocol
identifier
length
element ID
Function code
address
Register Length
4.4.2. Custom registration package
The custom registration package can be ASCII code or hex, the length of hex cannot be greater than 20 bytes, and the length of ASCII
code cannot be greater than 40 bytes.
Transmit
01
10
00 63
00 18
30
00 0D 31 31 36 2E 36 32 2E 34 32 2E 31 39
32 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 7B C7 00 01
7B F0
Device
ModBus
address
Function
code
address
Register
Length
Bytes
Write value
CRC
check code
Transmit
00 01
00 00
00 37
01
10
00 63
00 18
30
00 0D 31 31 36 2E 36 32
2E 34 32 2E 31 39 32 00
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
00 00 00 00 7B C7 00 01
Transmission
identifier
Protocol
identifier
length
element
ID
Function
code
address
Register
Length
Bytes
Write value