AMS manual Introduction, Limitations or Exceptions for the DCB-274

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ADVANCED MICRO SYSTEMS, INC.

HARDWARE

Introduction

Thank you for using a DCB-274 Stepper Motor Driver/Controller from ADVANCED MICRO SYSTEMS, INC. This unit is designed to provide years of reliable, accurate and cost-effective motion control. As with all AMS products, the DCB-274 is backed by over two decades of manufacturing excellence and a commitment to quality and support that guarantees your satisfaction.

This manual will assist you in optimizing the performance of your system. Its’ purpose is to provide access to information that will facilitate a reliable and trouble-free installation. The manual is organized into the following sections:

Section 1: Hardware. Section 1 is a description of the physical product, i.e., connections, physical and electrical characteristics and a “quick start” guide to get you up and running.

Section 2: Serial Interface. Section 2 defines all AMS serial communication protocols and highlights the specific protocol and hardware required for single and multi-axis operation.

Section 3: SMC-27X2 Software Commands. Section 3 details the software instructions and related parameters of the SMC-27X2 micro-controller that powers the DCB-274.

Section 4: Addendum. Pertinent schematics, charts, etc. are contained in Section 4.

In addition to the Users Manual, a PC/AT compatible systems integration diskette (EASI) is supplied. This powerful programming tool is an easy to use, menu driven utility file with on-line help screens and available source code (Microsoft "C"). Used together, the Users Manual and EASI diskette will enable you to quickly take advantage of the advanced programming features and system capabilities inherent in the system design.

Although the DCB-274 and supporting documentation were designed to simplify the installation and on- going operation of your equipment, we recognize that the integration of motion control often requires answers to many complex issues. Please feel free to take advantage of our technical expertise in this area by calling one of our support personnel to discuss your application at 603-882-1447.

Limitations or Exceptions for the DCB-274

The SMC-27X2 micro-controller used on the DCB-274 has capabilities or functions that vary from product to product. Therefore, some topics in this manual include descriptions of commands or hardware that may not be pertinent to the DCB-274, such as:

Serial interface

While it is possible to use a simple 3 wire RS-232 design, the DCB-274 is designed for a 5-volt differential RS-422 implementation only.

Current controls

The hold and run currents are adjusted with a software command (Y) that allows automatic hold current setback.

Encoder input

The Encoder input option allows quadrature digital inputs to be converted to step and direction for jogging or “shuttle” control. For encoder “feedback” or “closed-loop” control, AMS offers it’s MAX series products. Encoder "feedback" is not possible with the DCB-274.

Moving signal

Some AMS products have a “moving” signal available on the serial connector. The signals from all axes are combined to provide an “any-moving” signal. Determination of moving status, on the DCB-274, is better done using the Read Moving Status (^) command.

For applications requiring this type of signal, a mode using the small “l” command is available to allow port 4 to become a hardware “moving” output.

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Contents Nashua, NH Page Revision Date 07/05/06 Page Advanced Micro SYSTEMS, INC Addenum Limitations or Exceptions for the DCB-274 IntroductionProduct Overview FeaturesSIN-8 Required Hardware for OperationOut of the Box Quick Start Connect the Motor After Sign-onDual Ammeter Circuit Serial Interface J2, J3 Connections J1, J4 Advanced Micro SYSTEMS, INC HardwarePLC Mode- Sourcing Inputs Pin 7 VIO Reference InputInput Ports Standard Mode- Sinking InputsOutput Ports Typical User Input CircuitPort Encoder Input Option J1Typical Output Circuit Step and Direction Inputs J1 Power Supply and Motor Connection J5Encoder Inputs J1 Baud Rate Jumpers B1, B2 Typical Wiring Diagrams for Step MotorsPhysical SpecificationsElectrical EnvironmentalPhysical Dimensions RS-422 OverviewRS-232 Hardware RS-232RS-232 Daisy Chain connection Single axis, RS-232 connection using AMS SIN-7 adapterRS-422 Party Line Cable SpecificationsRS-422 Party Line Hardware Party Line ConnectRS-422/485 BUS-drop SIN-8 Serial AdapterSIN-8, RS-232 to RS-422 converter SIN-10 Intelligent Serial Adapter Other Party Line SignalsSIN-10, intelligent serial line converter Serial Communications Software Party Line ModeDaisy Chain Mode not recommended for more than 1 axis Serial Communications OverviewSign-On Serial Interface Using EasiBaud Rate Easi SoftwareExamine Command Daisy Chain Start-Up Simple Command ExamplesAxis Name Assignment Verify the Program NV Memory ProgrammingExecute the Program Edit Program Party Line and Daisy Chain Line CommandsSome Rules Party Line Startup Command ExampleAnatomy of Instruction Execution Command Cycle Examples Interrupt CommandsAdvanced Micro SYSTEMS, INC Serial Interface Advanced Micro SYSTEMS, INC Serial Interface Memory Map Non-Volatile Memory DetailsTurbo Ram Default TableESC Global Abort Command Format Description@ Soft Stop Outputs ResetPort Read/Write InputsProgramming Example Lower case B Fast and Slow Decay Set Jog SpeedsDivide Speeds Clear and Restore NV MemoryNormally Closed Home Switch Normally Open Home SwitchFind Home Special case Go Initial Velocity Step ResolutionJump to Address a, n+1 times Lower case I Restart Special TripRamp Slope Lower case K Trip Output Value Advanced Micro SYSTEMS, INC SMC-27X2 Software Lower case L Option Flags Loop on PortFlags and Numbers Moving Output Flag PLC Mode FlagLimit Polarity Flag Make Step and Direction Outputs FlagPort 4 Input Flag Move at a Constant VelocityGentle Limit Flag Set Origin Program ModeIndex Relative to Origin Trip Point SaveSet Slew Speed Lower case W Pre-energize WaitHold and Run Current ExamineRead Position Read Limits, Hardware Read NV MemoryIndex in Minus Direction + Index in Plus Direction\ Write to NV Memory Read Moving StatusName Axis Selective TerminationAMS SIN-11 Serial Adapter Party Line ModeAdvanced Micro SYSTEMS, INC Addendum Command SummaryCtrl Char Dec Hex Code Ascii Character CodeAbout Step Motor Current Step Motor CharacteristicsDetermining the Current Value Motor ChoiceBasic 8 Wire Motor Amps and Wire Count and PowerWire Motor Decay Control Application Notes V1.10 Double Speed CharacteristicsSerial Adapter Summary
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