© Munters AB, 2017
10
1. The cable between the external connection
box and the controllers should be a 3 wire
twisted shielded cable (22 or 24 AWG).
2. Connect the wiring as follows:
•
COM to COM
•
The Comm-Box A port is connected to
Controller's A port.
•
The Comm-Box B port is connected to
Controller's B port.
3. The final controller in any chain or branch
requires a 120 ohm terminator.
4. Connect the cable shield wire to the controller
ground strip.
5. Connect the wiring according to the following
table:
Port
Color Wire
COM
Brown
TX
Green
RX
White
+
Red
-
Black
COM
Shield wire
Figure 2: RS-485 Wiring
