Extended I/O of the DMC-2x00 Controller

117

Configuring the I/O of the DMC-2x00

117

Saving the State of the Outputs in Non-Volatile Memory

118

Accessing Extended I/O

118

Interfacing to Grayhill or OPTO-22 G4PB24

119

Example Applications

119

Wire Cutter

119

A-B Table Controller

120

Speed Control by Joystick

122

Position Control by Joystick

123

Backlash Compensation by Sampled Dual-Loop

123

Chapter 8 Hardware & Software Protection

126

Introduction

126

Hardware Protection

126

Output Protection Lines

126

Input Protection Lines

127

Software Protection

127

Programmable Position Limits

128

Off-On-Error

128

Automatic Error Routine

128

Limit Switch Routine

129

Chapter 9 Troubleshooting

130

Overview

130

Installation

130

Communication

131

Stability

131

Operation

131

Chapter 10 Theory of Operation

132

Overview

132

Operation of Closed-Loop Systems

134

System Modeling

135

Motor-Amplifier

136

Encoder

138

DAC

139

Digital Filter

139

ZOH

140

System Analysis

141

System Design and Compensation

143

The Analytical Method

143

Appendices

146

Electrical Specifications

146

Servo Control

146

Stepper Control

146

Input / Output

146

Power

147

Performance Specifications

147

Minimum Servo Loop Update Time:

147

Fast Update Rate Mode

148

Connectors for DMC-2x00 Main Board

149

vi Contents

DMC-2X00

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Galil DMC-2X00 user manual Troubleshooting 130