Munters CommBox Manual For Use And Maintenance page 11

Figure 3: RS-232 Wiring
© Munters AB, 2020
1. Connect the wiring as follows:
• COM to COM
• The CommBox TX port is
connected to Controller's RX
port.
• The CommBox RX port is
connected to Controller's TX
port.
2. The cable between the CommBox
and the controller should be a 3
Wire Shielded Cable (22 AWG
minimum).
3. Connect the cable shield wire to
the controller ground strip.
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