Ebyte E851-RTU, Руководство пользователя

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Chengdu Ebyte Electronic Technology Co.,Ltd E851-RTU(4440-ETH) User Manual
Copyright ©2012–2019, Chengdu Ebyte Electronic Technology Co.,Ltd
27
Receive
01 10 00 7B 00 17 F0 1E
Device ModBus address function code address Register length CRC check code
Modbus TCP Write Register:
Transmit
00 01 00 00 00 33 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
Transmission
identifier
Protocol
identifier
length
element
ID
Function
code
address
Register
Length
Bytes Write value
Receiver
00 01 00 00 00 06 01 10 00 7B 00 17
Transmission
identifier
Protocol
identifier
length element ID Function code address Register Length
4.4.3. Heartbeat package
The heartbeat packet 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. The first register of the heartbeat packet is used to store the heartbeat packet data type. The value 0x0000
indicates that the heartbeat packet is in hex format, and the value 0x0001 indicates that the heartbeat packet is in ASCII format. When
the value is 0x0000, the heartbeat packet value is 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09. The second register of
heartbeat packet is used to store the length of heartbeat packet value. The length of heartbeat packet value is 10, corresponding to
decimal 0x0A. Like custom registry packages, unused heartbeat pack value registers can be filled with "0" or not.
40147(0x0092) 40148(0x0093) 40149(0x0094) -- 40168(0x00A7)
type length Register package value
00 00 00 0A
00 01 02 03 04 05 06 07 08 09
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