SEP 2005 MODEL 1000
INSTALLATION AND SETUP
3-42
3.4.3.3 PC-to-GC, Permanent Cable Connection for Short Distance RS-232
Another way to connect a PC to the GC Controller is with straight-through serial cable connected
to one of the GC Controller's internal serial ports located on the Controller's Terminal Board for
Field Wiring (TB).
If the length of cable can be 50 feet or less, connect the serial cable to one of the GC Controller's
serial ports configured for RS-232. (Recall that output from a standard PC serial port follows RS-
232 serial definition.) Cable that is longer than 50 feet, when used for RS-232 serial transmission,
can result in spurious loss or corruption of data.
To connect a PC to one of the GC Controller's internal serial port jacks, proceed as follows:
(1) Access the GC Controller's Terminal Board for Field Wiring (TB).
(a) If necessary, see instructions provided in Section 3.4.1, step (1).
(2) Choose an available serial port on the TB that is configured for RS-232 serial protocol.
Unless specified otherwise by customer order, all serial channels on all versions of the GC
Controller are configured by default from the factory for RS-232. For the Rack mount,
retrofit, and purged versions of the GC Controller, and serial channel, COM4 is used for the
keypad and display without the COM4A Board. With the COM4A Board installed, COM8 is
used for the keypad and display. For further details, see Section 3.4.4, this manual, and
drawing DE-20782, GC Controller drawings addendum.
(a) The easiest option is to use a "straight-through" serial cable, like the one described
for the GC Controller front-panel connection (see Section 3.4.3.2), and connect it to
either one of the DB-9 female jacks on the TB.
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