Signal Name
Axis <1..4> Dir (CCW)
Axis <1..4> Step (CW)
Axis <1..4> Encoder Phase A
Axis <1..4> Encoder Phase B
Axis<1..4> Encoder Index
Axis <1..4> Home Switch
Axis <1..4> Forward Limit Switch
Axis <1..4> Reverse Limit Switch
Axis <1..4> Inhibit
Trigger <1..4>
Breakpoint <1..4>
Host +5 V
Analog Input Ground
Analog Input <1..4>
Analog Output <1..4>
Analog Output Ground
Shutdown
Analog Reference (output)
Digital Ground
© National Instruments Corporation
Table 5-1 describes the signals on the motion I/O connector.
Table 5-1. Motion I/O Signal Connections
Reference
Digital Ground
Digital Ground
Digital Ground
Digital Ground
Digital Ground
Digital Ground
Digital Ground
Digital Ground
Digital Ground
Digital Ground
Digital Ground
Digital Ground
—
Analog Input Ground
Analog Output Ground
—
Digital Ground
Analog Input Ground
—
Direction
Output
Motor direction or
counter-clockwise control
Output
Motor step or clockwise control
Input
Closed-loop only—phase A encoder
input
Input
Closed-loop only—phase B encoder
input
Input
Closed-loop only—index encoder
input
Input
Home switch
Input
Forward/clockwise limit switch
Input
Reverse/counter-clockwise limit
switch
Output
Drive inhibit
Input
High-speed position capture trigger
input <1..4>
Output
Breakpoint output <1.4>
Output
+5 V—host bus interlock
—
Reference for analog inputs
Input
12-bit analog input
Output
16-bit analog output
—
Reference for analog outputs
Input
Controlled device shutdown
Output
+7.5 V—analog reference level
—
Reference for digital I/O
5-3
Chapter 5
Signal Connections
Description
7344 Hardware User Manual