Gree VRF - Modbus TCP;BACnet Communication Setup; Network Cable Material; Gateway-BMS Connection Method

Gree VRF Protocol Gateway
13
5 Gateway and BMS adopt Modbus TCP or BACnet protocol
communication connecting method
Gateway communication system includes:
（1） Communication between gateway and BMS;
（2） Communication between gateway and air conditioner.
5.1 Selection of communication cable material
Communication
system
Type of
material
Communication
wire between
gateway and
air conditioner
L(m)
Cable
diamter
(mm²)
Material
standard
Remark
Communication
between gateway
and BMS via
network cable
10BMSE-T or
100BMSE-TX
interleaving
network cable
or
100BMSE-TX
parallel
network cable
L≤80 - -
 If the gateway directly
connects to PC, it needs
interleaving network cable.
 If the gateway connects to
PC via router, it adopts
parallel network cable.
Communication
between gateway
and air conditioner
Shielding
light/general
PVC sleeve
twisted pair
copper core
cord
L≤500 ≥2×0.75
IEC
60227-
5:2007
Total communication length
should not be over 500m
5.2 Communication Connection Method
（1） Communication connection between Gateway and BMS