Modbus Gateway(Pro)
16
6.2.3 Setting of Communication Connection
1 2
①
②
BMS
ONON
1 2
SA8
ONON
„
„
④
⑤
Modbus Gateway(Pro) 1
Master
ODU
Slave
ODU
Modbus Gateway(Pro) 2
Slave
ODU
Master
ODU
SA8
③
④
⑤
(1) Communication wire connection between Modbus Gateway(Pro) and BMS:
Step 1: Confirm the first Modbus Gateway(Pro) (Modbus Gateway(Pro)1 as
shown in the figure) that needs to be connected to BMS. Connect the R+ and R-
port of RS485-1 communication interface of this gateway and the BMS with
communication cable, as shown in step ① in the figure.
Step 2: Connect the R+ and R- port of RS485-1 communication interface of M
odbus Gateway(Pro)(Modbus Gateway(Pro)1) and the R+ and R- port of RS485-1
communication interface of the second Modbus Gateway(Pro)(Modbus Gateway(Pr
o)2 as shown in the figure) with communication cable, as shown in step ② in the fi
gure. If several Modbus Gateways(Pro) shall be connected, please connect them in
this way.
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