National Instruments cFP-20xx I/O Connector Cable Adapters

Compact FieldPoint Accessories 4 ni.com

Table 1 lists the pins on all the cFP-20xx controller cable adapters

and the RS-232 and RS-485 signals assigned to them.

I/O Connector Cable Adapters

NI offers three cable adapters for use with the 37-pin I/O

connectors on the Compact FieldPoint backplane.

Caution Compact FieldPoint I/O connector cable

adapters are for use only with nonhazardous voltages.1

For hazardous voltage wiring, use cFP-CB-xconnector

blocks and follow local electrical standards.

Part numbers 778621-01 and 778621-02 are 37-pin male to 37-pin

female cable adapters in 1 and 2 m lengths, respectively. They are

designed for connecting directly to DIN rail–mounted terminal

blocks, part numbers 778672-01 and 778673-01.

Table 1. Compact FieldPoint Serial Cable Pin Descriptions

DB-9 Pin RS-232 Signal

RJ-50 Pin or

Screw Terminal RS-485 Signal

1DCD 10 GND

2RX 9CTS+(HSI+)

3TX 8RTS+

(HSO+)

4DTR 7RXD+

5CND 6RXD–

6DSR 5CTS–(HSI–)

7RTS 4RTS–(HSO–)

8CTS 3TXD+

9RI 2TXD–

—No Connect 1No Connect

1Nonhazardous voltage is voltage below 42.4 Vrms or 60 VDC.