Signal Connections - National Instruments NI 951x User Manual

Motion control

Table of Contents

Signal Connections

Signal

Stepper Command Signals

Servo Command Signals

Drive Enable

This chapter describes how to make input and output signal connections

directly to the National Instruments 951x drive interface modules and

describes the associated I/O circuitry.

Table 3-1 describes the signals available on the modules.

Table 3-1. NI 951x Signal Reference

Signal Name

Step (CW)+

Step (CW)–

Direction (CCW)+

Direction (CCW)–

Drive Command

Drive Command COM

Drive Enable

Signal Overview

• Configurable Step/Direction or

CW/CCW output mode

• Configurable single-ended or

differential output type

• 5 MHz max pulse rate

• Separate reference to help keep digital

noise separate from the analog output

• 16-bit analog output

• ±10 V range

• Connects to the enable function of the

drive

• 0 to 30 V output configurable as sinking

or sourcing

• 100 μs minimum output pulse width

3-1

NI 951x User Manual

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951 series