VRF Protocol Gateway
13
Fig. 7.3 Schematic of connecting method of gateway
NOTICE!
In the Modbus, when the quantity of connected gateway exceeds 30 or
the communication distance exceeds 800m, one more PV isolation relay should be
added, and connect the R+ and R- terminals of PV isolation relay to the RS485-1
communication interfaces R+ and R- of the adjacent gateway.
Fig. 7.4 Installation of relay
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