NI PCI-7390, User Manual

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Chapter 4 Signal Connections
© National Instruments Corporation 4-3 NI PCI-7390 User Manual
Note An asterisk (*) on the signal name indicates the software default signal for the pin.
Table 4-1 includes descriptions for each of the signals and alternate signal
names.
Table 4-1. I/O Signal Connections
Signal Name
Alternate
Signal Name Reference Direction Description
Axis <1..4> Dir (CCW) ± — Isolated Ground Output Motor direction or
counter-clockwise control
Axis <1..4> Step (CW) ± Pulse Isolated Ground Output Motor step or clockwise
control
Axis <1..4> Encoder Phase A ± — — Input Phase A encoder input
Axis <1..4> Encoder Phase B ± — — Input Phase B encoder input
Axis <1..4> Index
(Encoder Phase Z) ± Encoder
Phase Z
— Input Index encoder input
Axis <1..4> Inhibit-In Alarm,
Drive-Fault
VI_COM <1..4> Input Inhibit input—alarm or
fault signal from the drive
Axis <1..4> In-Position — VI_COM <1..4> Input Move complete status
signal from the drive
Axis <1..4> Home Switch — VI_COM <1..4> Input Home switch
Axis <1..4> Forward Limit
Switch — VI_COM <1..4> Input Forward/clockwise limit
switch
Axis <1..4> Reverse Limit
Switch — VI_COM <1..4> Input Reverse/counter-
clockwise limit switch
Axis <1..4> Trigger
(Position Capture) Position
Capture
Isolated Ground Input High-speed position
capture input
Axis <1..4> Breakpoint
(Position Compare) Position
Compare
Isolated Ground Output High-speed position
compare output
Axis <1..4> General-Purpose
Input <0..1> — VI_COM <1..4> Input General-purpose inputs
Optional general-purpose
input functionality
Axis <1..4> Drive (Servo)
Ready
Drive Ready,
Servo Ready
VI_COM <1..4> Input Signal from the drive
indicating the drive is ready
Optional general-purpose
input functionality
Shutdown
Emergency stop Isolated Ground Input Signal from an emergency
stop switch that causes the
controller to enter a reset
state