Cooper & Hunter Modbus Mini - Communication Cable Requirements

Modbus Gateway(Mini)
17
7.2.1 Material Selection of Communication Cable
Communicati-
on system
Material of
cable
Comm-
unicati- on
cable L(m)
Cable
diameter
(mm
2
)
Material
standard
Remark
Communicati-
on between
Modbus
Gateway(
-
Mini)
and BMS
Light/
Ordinary
PVC
sheathed
twisted
pair
copper
wire
L≤800 ≥2×0.75
IE-
C60227-
5:2007
When
communic-
ation
distance
exceeds
800m,
photoelect
-
ric
isolation
repeater shall
be added
Communicati-
on between
Modbus
Gateway(
-
Mini)
and air
conditioner
Light/
Ordinary
PVC
sheathed
twisted
pair
copper
wire
L≤500 ≥2×0.75
IE-
C60227-
5:2007
The length of
communic-
ation cable
shall not
exceed 500m