Omron NX-EC0112, User Manual

Page: 38 / 468

1 Features and System Configuration
1 - 2 NX-series Position Interface Units User’s Manual (W524)
1-1 Features of Position Interface Units
“NX-series Position Interface Unit” is a generic name for any of a group of NX Units that perform I/O
processing of position data to perform positioning.
The Position Interface Units use the Motion Control Function Module in an NJ/NX-series Controller
(referred to as “MC Function Module”) to both perform pulse outputs and accept encoder inputs for
motor control.
This section provides an introduction to the Position Interface Units and their operations and it
describes the unique features of each Unit.
Position Interface Units all share the following features.
Position Interface Units use screwless clamping terminal blocks. Wiring is performed simply by insert-
ing ferrules. This eliminates the need for tightening screws and greatly reduces the amount of work that
is required for wiring.
You can use the MC Function Module in an NJ/NX-series CPU Unit to perform high-speed, high-preci-
sion control.
You can use motion control instructions to easily perform complex control tasks such as single-axis
PTP positioning, interpolation control, synchronized control (e.g., of electronic cams), and velocity con-
trol with a minimal amount of programming.
The following table lists the different types of Position Interface Units.
1-1-1 Introduction to Position Interface Units
Clamping Terminal Block Designed for Reduced Work
Simple, High-precision Motion Control with the MC Function Module
1-1-2 Types and Features of Position Interface Units
Type Application
Incremental Encoder Input Unit Converts pulse input signals from an incremental encoder and counts the
number of pulses.
SSI Input Unit Converts serial data from an SSI interface-compatible absolute encoder or
linear encoder to obtain the absolute position.
Pulse Output Unit Performs pulse output for positioning commands sent to a stepper motor
drive or other pulse input motor drive.