National Instruments PC-DIO-96 用户手册

Chapter 2

Configuration and Installation

© National Instruments Corporation

2-9

PC-DIO-96 User Manual

Warning:

During programming, note that each time a port is configured, output ports A
and C are reset to 0, and output port B is undefined.

Table 2-3. Port C Signal Assignments

Programming Mode

Group A

Group B

PC7

PC6

PC5

PC4

PC3

PC2

PC1

PC0

Mode 0

I/O

Mode 1 Input

I/O

IBF A

STBA*

INTRA

STBB*

IBFBB

INTRB

Mode 1 Output

OBFA*

ACKA*

I/O

INTRA

ACKB*

OBFB*

INTRB

Mode 2

OBFA*

ACKA*

IBF A

STBA*

INTRA

I/O

* Indicates that the signal is active low.

Cable Assembly Connectors

The cable assembly listed under Optional Equipment in Chapter 1 is an assembly of two 50-pin
cables and three connectors. Both cables are joined to a single connector on one end and to
individual connectors on the free ends. The connector that joins the two cables is a 100-pin
connector that plugs into the I/O connector of the PC-DIO-96. The other two connectors are
50-pin connectors, one of which is connected to pins 1 through 50 of the PC-DIO-96 I/O
connector, and the other of which is connected to pins 51 through 100 of the PC-DIO-96 I/O
connector. The cable with the label on it is connected to pins 1 through 50. Figures 2-5 and 2-6
show the pin assignments for the 50-pin connectors on the cable assembly.