Appendix B
Pinout Information
B-2
ni.com
Figure B-2 shows J1, the Fieldbus connector pinout.
Figure B-2.
Fieldbus Connector Pinout
Figure B-3 shows J2, the screw terminal block pinout.
Figure B-3.
Screw Terminal Block Pinout
The pinout of the PCMCIA-FBUS uses pins 6 and 7 of the J1 connector for
the Fieldbus signals, as specified in the
Fieldbus Standard for Use in
Industrial Control Systems, Part 2, ISA-S50.02.1992
. Pins 2 and 4 of the
J2 screw terminal block provide an alternate connection to the Fieldbus.
However, the screw terminal block is not a second, independent link.
All of the signals on the screw terminal block provide a direct connection
to the 9-pin DSUB. National Instruments provides the Power+ and Power–
connections as passive connections from the DSUB to the screw terminal.
The PCMCIA-FBUS itself does not supply power to, or draw power from,
these pins.
No Connection
No Connection
No Connection
No Connection
No Connection
Power –
Power +
Data –
Data +
13
25
4
7
68
9
1
2
3
4
5
Power –
Data –
Shield
Data +
Power +
