Wiring and Connections
25
Hardware Reference Guide - NX-Series NetLinx Integrated Controllers
RS-232/422/485 Ports
The RS-232/422/485 ports (ports 1 and 5 on the NX-3200/4200; port 1 on the NX-1200/2200) are 10-pin 3.5 mm
mini-Phoenix (male) connectors used for connecting A/V sources and displays. By default, these ports are RS-422- and
RS-485-disabled ports. These ports can be used as RS-232 ports by disabling RS-422 and RS-485 on the ports. Only
with RS-422/485 disabled will the ports operate as RS-232. See the SET BAUD command and the TSET
BAUD command in the NetLinx Programming chapter of the NX-Series Controllers WebConsole and Programming
Guide for more information on disabling RS-422 and RS-485 on these ports. These ports support most standard RS-232,
RS-422, and RS-485 communication protocols for data transmission.
FIG. 16 displays the RS-232/422/485 ports for each NX-series controller.
FIG. 16 RS-232/422/485 ports
The following table lists the pinouts for the RS-232/422/485 ports.
In the above table, pin 1 is located on the right side of the port, and the pinouts count up to the left.
RS-232/422/485 Port Pinouts
Pin 1 GND (used in RS-232 and RS-422)
Pin 2 RXD (used in RS-232)
Pin 3 TXD (used in RS-232)
Pin 4 CTS (used in RS-232)
Pin 5 RTS (used in RS-232)
Pin 6 TX+ (used in RS-422 and RS-485)
Pin 7 TX- (used in RS-422 and RS-485)
Pin 8 RX+ (used in RS-422 and RS-485)
Pin 9 RX- (used in RS-422 and RS-485)
Pin 10 +12V
NX-3200/4200
NX-2200
NX-1200
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