CY545 Stepper System Controller
Table of Contents

1 Introduction to the CY545

• CY545 Stepper System Controller
• Basic Features
• Motion Control Functions
• Motor Support Signals
• General Command Functions and Special Features
• CY545 Stepper Motor System Controller

2 Pinout & Package Overview

• CY545 Dip Pinout & Dimensions
• CY545/J PLCC Pinout & Dimensions
• CY545 Pin Description

3 Command Interfaces

• Command Interfaces
• Parallel Interface
• CY545 Interface to CY233 Network Control Chip
• The CY545 Serial Interface

4 Command Summary

• CY545 Command Summary
• Command Formats
• ASCII Command Format
• Binary Command Format

5 Motor Control Commands

• Motor Control Commands
• Set Stepping Rate
• Set Count and Direction
• Set Step Mode
• Moving the Motor
• Position Counter “Wrap-Around”

6 Bit Function Commands

• Bit Function Commands
• User Bit
• Bit Dependent Jump and Wait
• Step/Test/Seek Home Command

7 External Memory Support Commands

• External Memory Support Commands
• External Memory Address Pointer
• Writing Commands into Memory
• Running From External Memory
• Example

8 Program Branch Commands

• Jump and Loop
• Nested Loops
• Zloops within a Loop
• Loops within a Zloop

9 Operating Mode Command

• Operating Mode Command

10 Miscellaneous Commands

• Initialize Command
• Time Delay Command
• Query Command
• Display CY545 Status
• Display Memory Contents
• Message Display Command
• Embedded Control Characteristics and their Use
• Hewlett Pachard (HP) LED 8 Digit Display
• LED Display Details

11 CY545 Circuits

• Three Example Cases
• Minimum Serial Configuration
• Minimum Parallel Configuration
• Maximum Configuration-CY545 Example Circuit Diagram

12 External Memory Support

• Memory Read/Write
• “Auto-Start” Feature for Stand Alone Operation

13 Thumbwheel Switch Support

• Thumbwheel Switch Support
• CY545 Thumbwheel Switch Parameter Addresses
• CY545 Thumbwheel Circuit Diagram

14 CY545 Output Display Support

• Output Format
• Output to LCD (CY325-Based)
• Output to Parallel Device (Including CY233 NETWORK Chip)
• Output to 8 Digit LED Display

15 CY545 Prototyping Support

• The CYB-233 Prototyping Board
• The CYB-003 Prototyping Board
• The CYB-545 Prototyping Board
• The CYS-545 IBM Panel Software
• The CyberCom Console Software

16 Timing and Control

• Timing and Control
• The Parallel Handshake
• Immediate Commands during External Memory Program Execution
• The Serial Interface
• External Memory Control Signals
• Special HP Display Control Signals
• Thumb Wheel Switch Interface Control Signals
• Stepper Motor Interface Signals
• PULSE and CCW
• STOPPED
• SLEW
• INHIBIT_ABORT
• CW_LIMIT and CCW_LIMIT
• JOG Mode Operation
• Automatic Position Display
• Home Signal

17 CY545 Step Rate Information

• CY545 Step Rate Information
• The Slope Parameter
• Optimal Acceleration Curves
• Acceleration Curve as a Function of R
• Slope and Elapsed Time
• CY545 Slope Curves
• CY545 Step Rate Tables

18 Electrical Specifications

• Absolute Maximum Ratings
• Electrical Conventions
• Reset Circuitry
• Clock Circuits

19 Examples

• Variable Stock Cut and Punch
• Driver Circuit Considerations
• Interfacing to the 8255
• Operation of Several CY545s Using a Common Data Bus
• Synchronization of Two CY545s
• Coordination of Several CY545s
• Example Programs and Waveforms
• ASCII and Binary Data Programming Examples

20 Getting your CY545 Running

• Getting your CY545 Running
• BASIC Language CRT Emulation Program for Serial Communications
• Stepper Motor Controllers Guide
• Changes from CY545 to CY545A
• Changes from CY545A to CY545B

Copyright & Disclaimer Notice

Cybernetic Micro Systems, Inc. software products are copyrighted by and shall remain the property of Cybernetic Micro Systems, Inc. Duplication is subject to a license from Cybernetics. Cybernetic Micro Systems, Inc. reserves the right to improve design or performance characteristics. Cybernetic Micro Systems, Inc. assumes no responsility for the use of any circuitry other than circuitry embodied in Cybernetic products. No other circuit patent licenses are implied.

Information furnished by Cybernetic Micro Systems, Inc. is believed to be accurate and reliable. However, no responsibility is assumed by Cybernetic Micro Systems, Inc. for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent right of Cybernetic Micro Systems, Inc. Further, Cybernetic Micro Systems, Inc. reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation to notify any person or organization of such revision or changes; and Cybernetics assumes no responsibility for any errors which may appear in this document and makes no commitment to update the information contained herein.

Because of the wide variety of applications in which this product may be used, Cybernetic Micro Systems makes no claim as to the product’s fitness for any given application. It is therefore the user’s responsibility to ensure the safety and viability of using this product in his application. This product is not recommended for use in critical life sustaining applications.

The following are trademarks of Cybernetic Micro Systems, Inc:

                Bin-ASCII       CY250         CY512
                CYMPL           CY300         CY525
                Analog-ASCII    CY325         CY545
                ASCII-Analog    CY327         CY550
                CY123           CY360         CY600
                CY132           CY480         CY750
                CY232           CY233-LINC    P-51   
                CY233           CY500         USB-RAM

All rights reserved; no part of this publication may be reproduced, except for personal and archival uses, without the prior written permission of: