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National Instruments Network Device DAQ S User Manual

Page 116

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Chapter 8

Programmable Function Interfaces (PFI)

© National Instruments Corporation

8-5

NI 6124/6154 User Manual

AO Start Trigger (ao/StartTrigger)

Counter n Source

Counter n Gate

Counter n Internal Output

Frequency Output

PXI_STAR

RTSI <0..7>

(NI 6124 Only)

Analog Comparison Event

(NI 6124 Only)

Change Detection Event

(NI 6124 Only)

DI Sample Clock* (di/SampleClock)

(NI 6124 Only)

DO Sample Clock* (do/SampleClock)

Note

Signals with a * are inverted before being driven to a terminal; that is, these signals

are active low.

Using PFI Terminals as Static Digital Inputs and Outputs

You can configure PFI terminals to be static digital input or output
terminals:

NI 6124 Devices—Each PFI can be individually configured as a static
digital input or a static digital output. When a terminal is used as a
static digital input or output, it is called P1.x or P2.x. On the I/O
connector, each terminal is labeled PFI

x

/P1.x or PFI x/P2.x.

In addition, NI 6124 devices have eight lines of bidirectional DIO
signals.

NI 6154 Devices— When a terminal is used as a static digital input or
output, it is called P0.x or P1.x. On the I/O connector, each terminal is
labeled PFI x/P0.x or PFI x/P1.x.