Ebyte E851-RTU

Chengdu Ebyte Electronic Technology Co.,Ltd E851-RTU(4440-ETH) User Manual
Copyright ©2012–2019, Chengdu Ebyte Electronic Technology Co.,Ltd
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The first register of the custom registration package is used to store the registration packet type. The value 0x0000 indicates that the
registration packet is in hex format, and the value 0x0001 indicates that the registration packet is in ASCII format. When the value is
0x0001, the registration packet value is ABCDEFGHIJ,the corresponding ASCII code value is as follows.The second register of the
custom registry package is used to store the length of the registered package value. The length of the registered package value is 10,
corresponding to the hexadecimal system is 0x0A. Like IP registers, unused registered packet value registers can be "0" filled or not
filled.
40124(0x007B)
40125(0x007C)
40126(0x007D) -- 40145(0x0090)
40146(0x0091)
type
length
Register package value
Registered Packet
Mechanism
00 01
00 0A
41 42 43 44 45 46 47 48 49 4A
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 00
00 01
The registration package mechanism has 5 modes:
Registration packet mechanism register value
(0x0091)
Corresponding function description
00 00
Close the registration package mechanism
00 01
Add MAC/IMEI as registration packet data before each packet is sent to the server.
00 02
Add custom registration package data before each packet is sent to the server.
00 03
Send a MAC/IMEI registration package only when connecting to the server for the first
time
00 04
Send a user-defined registration package only when connecting to the server for the
first time you
Modbus RTU Write Register:
Transmit
01
10
00 7B
00 17
2E
00 01 00 0A 41 42 43 44 45 46 47 48 49 4A 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 00 00 01
00 F4
Device
ModBus
address
function
code
address
Register
length
Bytes
Write value
CRC
check code