Rockwell Automation Allen-Bradley ControlLogix 1756-MVI Bedienungsanleitung

ControlLogix

Multi-Vendor

Interface Module

1756-MVI

Programming Reference

Manual

Important User Information

Because of the variety of uses for the products described in this

publication, those responsible for the application and use of this

control equipment must satisfy themselves that all necessary steps

have been taken to assure that each application and use meets all

performance and safety requirements, including any applicable laws,

regulations, codes and standards.

The illustrations, charts, sample programs and layout examples shown

in this guide are intended solely for purposes of example. Since there

are many variables and requirements associated with any particular

installation, Allen-Bradley does not assume responsibility or liability

(to include intellectual property liability) for actual use based upon

the examples shown in this publication.

Allen-Bradley publication SGI-1.1, Safety Guidelines for the

Application, Installation and Maintenance of Solid-State Control

(available from your local Allen-Bradley office), describes some

important differences between solid-state equipment and

electromechanical devices that should be taken into consideration

when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in whole

or part, without written permission of Rockwell Automation, is

prohibited.

Throughout this manual we use notes to make you aware of safety

considerations:

Attention statements help you to:

•identify a hazard

•avoid a hazard

•recognize the consequences

Allen-Bradley and ControlLogix are trademarks of Rockwell Automation.

Borland C++ is a trademark of Borland Corporation.

Microsoft C++, Windows 95/98, and Windows NT are trademarks of Microsoft Corporation.

ATTENTION

Identifies information about practices or

circumstances that can lead to personal injury or

death, property damage or economic loss

IMPORTANT Identifies information that is critical for successful

application and understanding of the product.

European Communities (EC)

Directive Compliance

If this product has the CE mark it is approved for installation within

the European Union and EEA regions. It has been designed and

tested to meet the following directives.

EMC Directive

This product is tested to meet the Council Directive 89/336/EC

Electromagnetic Compatibility (EMC) by applying the following

standards, in whole or in part, documented in a technical

construction file:

•EN 50081-2 EMC — Generic Emission Standard, Part 2 —

Industrial Environment

•EN 50082-2 EMC — Generic Immunity Standard, Part 2 —

Industrial Environment

This product is intended for use in an industrial environment.

Low Voltage Directive

This product is tested to meet Council Directive 73/23/EEC Low

Voltage, by applying the safety requirements of EN 61131-2

Programmable Controllers, Part 2 - Equipment Requirements and

Tests. For specific information required by EN 61131-2, see the

appropriate sections in this publication, as well as the Allen-Bradley

publication Industrial Automation Wiring and Grounding Guidelines

For Noise Immunity, publication 1770-4.1.

This equipment is classified as open equipment and must be

mounted in an enclosure during operation to provide safety

protection.

1Publication 1756-RM004B-EN-P - October 2000

Preface

About This Reference Manual

Introduction

This reference manual provides information needed to develop

application programs for the 1756-MVI ControlLogix Multi-Vendor

Interface Module. The 1756-MVI module allows access through the

ControlLogix platform to devices with a serial port. The MVI module is

user programmable to accommodate devices with unique serial

protocols.

This manual contains the available software API (Application

Programming Interface) libraries and tools, module configuration and

programming information, and example code.

Audience

This manual is intended for control engineers and technicians who are

installing, programming, and maintaining a control system that

includes a 1756-MVI module.

We assume that you:

•are familiar with software development in the 16-bit DOS

environment using the C programming language.

•are familiar with Allen-Bradley programmable controllers and

the ControlLogix platform.

Common Techniques Used

in this Manual

The following conventions are used throughout this manual:

•Bulleted lists provide information, not procedural steps.

•Numbered lists provide sequential steps.

•Information in bold contained within text identifies menu

windows, or screen options, screen names, and areas of the

screen.

•Change bars in the left margin of the page indicate material that

is new to this revision.

Publication 1756-RM004B-EN-P - October 2000

P-2 About This Reference Manual

Contents

This programming reference manual contains the following chapters:

References

For additional information refer to the following publications:

•ControlLogix 1756-MVI Multi-Vendor Interface Module

Installation Instructions, publication number1756-1N001A-US-P

•General Software Embedded DOS 6-XL Developer’s Guide 1.2

•Introduction to ControlLogix Module Development, CID#X1557

Screen captures are pictures of the software’s actual

screens and windows. The names of screen buttons and

fields are often in bold in the text of a procedure.

The “MORE” icon is placed beside any paragraph that

references sources of additional information outside of this

document.

Application

Development

Overview

4CIP Messaging

Serial Port API

1756-MVI Module

Overview

MVI Backplane API Programming the MVI

Module

Publication 1756-RM004B-EN-P - October 2000

About This Reference Manual P-3

Definitions of Terms

Used in this Manual

Rockwell Automation

Support

Rockwell Automation offers support services worldwide, with over 75

sales/support offices, 512 authorized distributors, and 260 authorized

systems integrators located throughout the United States alone, plus

Rockwell Automation representatives in every major country in the

world.

Local Product Support

Contact your local Rockwell Automation representative for:

•sales and order support

•product technical training

•warranty support

•support service agreements

Technical Product Assistance

If you need to contact Rockwell Automation for technical assistance,

call your local Rockwell Automation representative, or call Rockwell

directly at: 1 440 646-6800.

For presales support, call 1 440 646-3NET.

This term Means

API Application Programming Interface.

Backplane The electrical interface, or bus, to which modules connect when inserted

into the rack. The 1756-MVI module communicates with the control

processor(s) through the ControlLogix backplane (a.k.a. ControlBus).

BIOS Basic Input Output System. The BIOS firmware initializes the module at

power-on, performs self-diagnostics, and provides a DOS compatible

interface to the console and Flash ROM disk.

CIP Control and Information Protocol. This is the messaging protocol used for

communications over the ControlLogix backplane. See the ControlNet

Specification for details.

Connection A logical binding between two objects. A connection allows more efficient

use of bandwidth, since the message path is not included once the

connection is established.

Consumer A destination for data.

Library The library file containing the API functions. The library must be linked with

the developer’s application code to create the final executable program.

Originator A client that establishes a connection path to a target.

Producer A source of data.

Target The end-node to which a connection is established by an originator.

Publication 1756-RM004B-EN-P - October 2000

P-4 About This Reference Manual

You can obtain technical assistance online from the following

Rockwell Automation WEB sites:

•www.ab.com/mem/technotes/kbhome.html (knowledge base)

•www.ab.com/networks/eds (electronic data sheets)

Your Questions or Comments about This Manual

If you find a problem with this manual, please notify us of it on the

enclosed Publication Problem Report (at the back of this manual).

If you have any suggestions about how we can make this manual

more useful to you, please contact us at the following address:

Rockwell Automation, Allen-Bradley Company, Inc.

Control and Information Group

Technical Communication

1 Allen-Bradley Drive

Mayfield Heights, OH 44124-6118

iPublication 1756-RM004B-EN-P - October 2000

Table of Contents

Chapter 1

1756-MVI Module Overview

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 1-1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Configuration Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

System Firmware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

BIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

BIOS Console Services . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

BIOS Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Operating System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Chapter 2

Application Development

Overview

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 2-2

API Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Calling Convention . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Header Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Sample Application Code . . . . . . . . . . . . . . . . . . . . . . . 2-3

Multithreading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Development Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Chapter 3

MVI Backplane API

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 3-1

MVI API Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

MVI Backplane API Architecture . . . . . . . . . . . . . . . . . . . . 3-2

MVI Backplane API Functions . . . . . . . . . . . . . . . . . . . . . . 3-5

Initialization Functions . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Direct I/O Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Messaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Miscellaneous Functions. . . . . . . . . . . . . . . . . . . . . . . . 3-20

Chapter 4

CIP Messaging API

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 4-1

CIP Messaging API Files . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

CIP API Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Backplane Device Driver. . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

CIP API Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Object Registration. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Connected Data Transfer . . . . . . . . . . . . . . . . . . . . . . . 4-10

Callback Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Special Callback Registration . . . . . . . . . . . . . . . . . . . . 4-25

Miscellaneous Functions. . . . . . . . . . . . . . . . . . . . . . . . 4-28

Publication 1756-RM004B-EN-P - October 2000

Table of Contents ii

Chapter 5

Serial Port API

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 5-1

Serial API Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Serial Data Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Serial Port API Functions . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Port Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20

Miscellaneous Functions. . . . . . . . . . . . . . . . . . . . . . . . 5-35

Chapter 6

Programming the MVI Module

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 6-1

ROM Disk Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

CONFIG.SYS File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Command Interpreter. . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Sample ROM Disk Image . . . . . . . . . . . . . . . . . . . . . . . 6-3

Creating a ROM Disk Image . . . . . . . . . . . . . . . . . . . . . . . 6-4

Using DISKIMAG: DOS Disk Image Builder . . . . . . . . . 6-4

Using WINIMAGE: Windows Disk Image Builder . . . . . 6-6

Downloading a ROM Disk Image. . . . . . . . . . . . . . . . . . . . 6-8

MVI Flash Update . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Using the MVI Flash Update Utility . . . . . . . . . . . . . . 6-8

MVIUPDAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Booting from the C: (Compact Flash) Drive . . . . . . . . . . . . 6-11

Index

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