Chapter 3
Feature Descriptions
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National Instruments Corporation
3-7
cFP-20xx and cFP-BP-x User Manual
COM 1
COM 1 is an RS-232 DTE serial port with a standard DB-9 connector. The
Serial Port VIs access COM 1 as port 0. Figure 3-2 shows the locations of
the DB-9 connector pins and Table 3-2 lists the signals on the pins.
Figure 3-2.
DB-9 Connector Pin Locations
COM 2 (cFP-2010 and cFP-2020 Only)
COM 2 is an RS-232 DTE serial port with a 10-position modular jack. The
Serial Port VIs access COM 2 as port 1. Refer to Figure 3-3 and Table 3-3
for pin locations and signal descriptions.
Table 3-2.
DB-9 Pin Descriptions
DB-9 Pin
RS-232 Signal
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
PIN 1
PIN 9
PIN 5
PIN 6
