Modbus Gateway(Pro)
8
Setting method of address 43 is shown as below:
1
6
5
4
3
2
7
8
0
1
Address
Address
1
1
0
1
0
0
1
0
43
1
2
3
4
5
6
7
8
value
DIP form
4.3.3 The Seventh Switch of Function DIP Switch-Setting of
Modbus Bus Matched Resistance
Notice! Master outdoor unit or gateway of the system which is at the end of
Modbus bus must be set as with the matched resistance, otherwise communication
will be abnormal!
Modbus bus: Detailed meaning please refer to topology introduction.
The seventh switch of function DIP switch is used for setting the Modbus bus
matched resistance of this gateway.
If the gateway is at the end of Modbus bus, the gateway shall be set as with the
matched resistance, which means set the seventh DIP switch to 0;
If the gateway is not at the end of Modbus bus, the gateway shall be set as
without the matched resistance, which means set this DIP switch to 1.
DIP switch of matched resistance is shown as below:
1
6
5
4
3
2
7
8
0
1
Function
1
0
is the position of DIP
Without matched resistance
With matched resistance
7
7
