Wiring For Rs-232 Control - Extron electronics SW2 DP User Manual

Wiring for RS-232 Control

The 5-pole, 3.5 mm captive screw Remote connector is used for RS-232 communication
and to enable auto-input switching between inputs connected to the switcher.
Use a female 9-pin D-to-bare wire RS-232 cable or a universal control cable to connect
your computer or control system to the Remote connector.
1.
2.
Figure 3 shows how to wire this shared connector for RS-232.
RS-232 Auto
Tx Rx G
Wire the unterminated end of the RS-232 cable to the provided 5-pole captive screw
plug as described below. Connect the transmit, receive, and ground wires of the cable
to the first three pins on the connector, starting at the left:
Connect the transmit wire to pin 1, which plugs into the Tx (transmit) port.
•
Connect the receive wire to pin 2, which plugs into the Rx (receive) port.
•
Connect the ground wire to pin 3, which plugs into the G (ground) port.
•
Plug the 5-pole connector into the Remote receptacle on the rear panel.
SW2 DP Switcher
Rear Panel
Remote Port
NOTE: If you use cable that has a drain
wire, tie the drain wire to ground
at both ends.
Ground (G)
Receive (Rx) Transmit (Tx)
Transmit (Tx) Receive (Rx)
Figure 3. Remote Connector Pin Assignments for RS-232
9-pin HD
Connector
Computer or
Control System
RS-232 Port
SW2 DP • Installation 5