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Chapter 3
Connector Information
Signal Name
AO GND
PFI <0..5>/P0.<0..5>
PFI <6..9>/P1.<0..3>
NC
P0.GND
P1.GND
P1.VCC
AO POWER SUPPLY
NI 6238/6239 User Manual
Table 3-1. I/O Connector Signals (Continued)
Reference
Direction
—
—
P0.GND
Input
P1.GND
Output
—
—
—
—
—
—
—
—
—
—
Description
Analog Output Ground—AO GND is the reference for
AO <0..1>. AI GND and AO GND are connected on the
device.
Note: AI GND and AO GND are isolated from earth ground,
chassis ground, P0.GND, and P1.GND.
Programmable Function Interface or Static Digital Input
Channels 0 to 5—Each of these terminals can be individually
configured as an input directional PFI terminal or a digital
input terminal.
As an input, each input PFI terminal can be used to supply an
external source for AI or AO timing signals or counter/timer
inputs.
Note: PFI <0..5>/P0.<0..5> are isolated from earth ground,
chassis ground, AI GND, AO GND, and P1.GND.
Programmable Function Interface or Static Digital
Output Channels 6 to 9—Each of these terminals can be
individually configured as an output directional PFI terminal
or a digital output terminal.
As a PFI output, you can route many different internal AI or
AO timing signals to each PFI terminal. You also can route the
counter/timer outputs to each PFI terminal.
Note: PFI <6..9>/P1.<0..3> are isolated from earth ground,
chassis ground, AI GND, AO GND, and P0.GND.
No connect—Do not connect signals to these terminals.
Digital Ground—P0.GND supplies the reference for input
PFI <0..5>/P0.<0..5>.
Note: P0.GND is isolated from earth ground, chassis ground,
AI GND, AO GND, and P1.GND.
Digital Ground—P1.GND supplies the reference for output
PFI <6..9>/P1.<0..3>.
Note: P1.GND is isolated from earth ground, chassis ground,
AI GND, AO GND, and P0.GND.
Digital Output Power—P1.VCC supplies the power for
digital output lines. The actual power consumed depends on
the load connected between the digital output and P1.GND.
Analog Output Power Supply—AO POWER SUPPLY
supplies power to the analog current output terminals.
3-2
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