Chapter 8
Programmable Function Interfaces (PFI)
©
National Instruments Corporation
8-5
•
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
.
