User's Manual

545C Operations Manual

02/10/2012 Prerelease DCN 00001789-A

Figure 13: MCC-545C I/O port cable

Operator Port

The Operator Port is normally connected to a local operator terminal.

Use a standard RS-232 cable with a 9-pin male D connector. Normally,

only 3 wires (pins 2, 3 and 5) are required when connecting to the

operator port. The port is wired to support handshaking where required

such as when using a modem.

Data Port

The Data Port may be used for connecting to a data logger, GPS

receiver or other serial input device. Use a standard RS-232 cable with a

9-pin male D connector. Refer to Section 4.5 for more information on

interfacing to data loggers or other serial input devices.