Modbus Address Description
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Communication Protocol: Modbus RTU
Baud rate: 19200 (Customized: 4800/9600/19200/38400)
Data bits: 8 bit
Parity Check: none
Stop bit: 1 bit
03 Read Holding Register
Address
Description
Read/Write
Data Type
Length
0
System reservation
R
Integer
1
1
Device address high position
R
Integer
1
2
Device address low position
R
Integer
1
3
System reservation
R
Integer
1
4
Cloud service data sending cycle
R/W
Integer
1
5
Surge count value
R
Integer
1
6
RS485 working mode (0:modbus 1:cloud)
R
Integer
1
7
Modbus address
R
Integer
1
8
Modbus baud
R
Integer
1
9
SPD remote communication state (0:Normal open 1:Normal close)
R
Integer
1
10
SPD Remote Alarm mode (0:NC Alarm 1:NO Alarm)
R/W
Integer
1
11
Device state (0:Normal 0xffff: Alarm)
R
Integer
1
