Parker PowerStation XT Series, User Manual

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The communication standard you select for COM1, in part, depends upon the distance between the
PowerStation and the controller, as well as the communication standards that the controller supports.
Use a standard DB-9F connector for attaching to this port.
Caution When using RS-232 communications, the length of the serial cable should
not exceed 65 feet (20 meters).
RS-422 and RS-485 communications offer greater noise immunity than RS-232. These standards increase
the maximum cable length to 4,000 feet (1,200 meters).
RS-422 communications are full-duplex (send and receive simultaneously), while RS-485 communications
are half-duplex (send or receive independently).
For either configuration, be careful not to connect any wires to unused connector pins. Information on the
specific connection required for the InteractX drivers you will use is located in the Help file associated with
the driver.
Example Connector Pinouts and Cable Wiring
RS-232 RS-422 RS-485
Caution Do not connect any signals to unused pins. Uncertain operation may
result.