Set Heartbeat Package Content; Set Heartbeat Package Time - Ebyte E821-RTU User Manual

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Note: 00 00 is network heartbeat package, 00 01 is serial port heartbeat package.

4.3.10 Set heartbeat package content

01
Send
Device
Function
ModBus
address
Modbus RTU protocol write register:
01
Receive
Device ModBus
address
Modbus TCP protocol write register:
00 01 00 00
Se
nd
Transm
ission Protocol
identifi identifier
er
00 01
Recei
Transmission
ve
identifier
Note: 00 is HEX, 01 is ASCII. 28 is the content length of the heartbeat packet. 41 42 43 68 23 67 AA 00 2A 00 30
00 00 00 00 00 00 00 00 00 00 00 00 11 00 22 00 33 00 44 00 12 33 23 11 10 1D 1C 1B 1A is heartbeat package content.
For example: send the heartbeat package content: ebyte, the write value is 01 05 65 62 79 74 65 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 00 00 00 00

4.3.11 Set heartbeat package time

Modbus RTU protocol write register:
01
Send
Device ModBus
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10 00 E9 00 15
Register
Address
code length
10
Function
code
00 31 01
Unit Function
Length
identifier
00 00 00 31
Protocol
Length
identifier
06
Function
00 28 41 42 43 68 23 67 AA 00
2A 00 30 00 00 00 00 00 00 00 00
2A
00 00 00 00 11 00 22 00 33 00 44
00 12 33 23 11 10 1D 1C 1B 1A
Number
of bytes
00 E9
Address
10 00 E9 00 15
Register
Address
code length
01
Unit identifier
01 41
Address
E821-RTU (0400-ETH)User Manual
Write value
00 15
Register length CRC check code
00 28 41 42 43 68 23
67 AA 00 2A 00 30 00
00 00 00 00 00 00 00
2A
00 00 00 00 11 00 22
00 33 00 44 00 12 33
23 11 10 1D 1C 1B 1A
Number
Write value
of bytes
10 00 E9
Function
Address
code
01 AA
Write value CRC check code
9D 8C
CRC
check
code
D0 32
00 15
Register
length
59 CD
24 24