M7PHB_E.PDF

Preface, T able of Contents

Product Overview

SIMATIC

Developing a Simple Program

Structure and Features of

M7 RMOS32

System Software for

M7–300/400

Program Design

RMOS API Function Calls

M7 API: General Information,

Events and Alarms

Programming Manual

Accessing Process I/Os

This manual is part of the documentation

package with the order number:

6ES7802–0FA14–8BA0

Working with S7 Objects

Communication

Loadable Drivers

Design and Development of a

User Program

Cycle and Reaction Times of the

M7-300/400

Glossary, Index

C79000-G7076-C851-02

Safety Guidelines

This manual contains notices which you should observe to ensure your own personal safety, as well as to

protect the product and connected equipment. These notices are highlighted in the manual by a warning

triangle and are marked as follows according to the level of danger:

Danger

indicates that death, severe personal injury or substantial property damage will result if proper precau-

tions are not taken.

Warning

indicates that death, severe personal injury or substantial property damage can result if proper precau-

tions are not taken.

Caution

indicates that minor personal injury or property damage can result if proper precautions are not taken.

Note

draws your attention to particularly important information on the product, handling the product, or to a

particular part of the documentation.

Qualified Personnel

Only qualified personnel should be allowed to install and work on this equipment. Qualified persons are

defined as persons who are authorized to commission, to ground, and to tag circuits, equipment, and sys–

tems in accordance with established safety practices and standards.

Correct Usage

Note the following:

Warning

This device and its components may only be used for the applications described in the catalog or the

technical description, and only in connection with devices or components from other manufacturers which

have been approved or recommended by Siemens.

This product can only function correctly and safetly if it is transported, stored, set up and installed cor-

rectly, and operated and maintained as recommended.

Trademarks

are registered trademarks of SIEMENS AG.

Some of the other designations used in these documents are also registered trademarks; the owner’s

rights may be violated if they are used by third parties for their own purposes.

, SIMATIC HMI

and SIMATIC NET

The reproduction, transmission or use of this document or its contents

is not permitted without express written authority. Offenders will be

liable for damages. All rights, including rights created by patent grant or

registration of a utility model or design, are reserved.

Disclaimer of Liability

We have checked the contents of this manual for agreement with the

hardware and software described. Since deviations cannot be precluded

entirely, we cannot guarantee full agreement. However, the data in this

manual are reviewed regularly and any necessary corrections included in

subsequent editions. Suggestions for improvement are welcomed.

Siemens AG

Automation and Drives Group

Industrial Automation Systems

P.O.Box 4848, D- 90327 Nuremberg

Siemens AG 1998

Technical data subject to change.

System Software for M7–300/400 Program Design

C79000-G7076-C851-02

Index-2

Siemens Aktiengesellschaft

C79000-G7076-C851-02

SIMATIC

Preface

This manual is designed to help you when writing C programs for the automation

computer family M7-300 and M7-400 under the operating system M7 RMOS32. It

provides you with key information about the features and the functions of M7

RMOS32. It contains information on:

The M7 RMOS32 hardware and software environment,

The structure and function of M7 RMOS32,

The function and services of the RMOS API,

The function and services of the M7 API,

Mechanisms for communicating with other S7 and M7 systems,

Design and development of user programs.

Audience

This manual is mainly intended for those writing C programs for the automation

computers M7-300 and M7-400.

Scope of this Manual

This manual is applicable to the automation computers M7-300 and M7-400 with

the system software M7-SYS RT V4.0.

System Software for M7–300/400 Program Design

C79000-G7076-C851-02

iii

Preface

What is New?

This manual provides the following new topics on changes and extensions of

functions supported by version V4.0 of the system software.

Topic

Chapter

Read and write floating point numbers

7.4

Communication using Configured Connections via PROFIBUS DP (with the IF

964-DP interface submodule) and via Industrial Ethernet (with the CP 1401

communication processor)

8.5

Socket Interface for TCP/IP communication

8.12

The RMOS API provides additional function calls for writing loadable drivers.

Information on the operating principle of loadable drivers under M7 RMOS32 and

the methods used to program them can be found in the electronic manual Writing

Loadable Drivers which is part of the M7-SYS RT system software (see below).

Scope of the Documentation Package

The system software for the automation computers M7-300 and M7-400 are

documented in several manuals which can be ordered separately from the

respective product. The available manuals are listed in the following table.

Manual

Contents

System software for M7-300 and M7-400

Installation and Operation

User Manual

Installation on operation of

automation computers M7–300/400.

System software for M7-300 and M7-400

Program Design

Programming manual

Design and development of C/C++

programs.

System software for M7-300 and M7-400

System and Standard Functions

Reference Manual

Detailed information on

programming under M7

RMOS32.

System software for M7-300 and M7-400

Writing Loadable Drivers

Electronic Manual M7LDRV1B.PDF

Design of loadable drivers under

Feedback

We need your help to enable us to provide you and future M7-SYS RT users with

optimum documentation. If you have any questions or comments on this manual,

please fill in the remarks form at the end of the manual and return it to the address

shown on the form. We would be grateful if you could also take the time to answer the

questions giving your personal opinion of the manual.

System Software for M7–300/400 Program Design

C79000-G7076-C851-02

RMOS32, programming and

reference manual.

Preface

How to Use this Manual

This manual contains a guide to the key points of program design, program

development and program testing.

Product Overview

Chapter 1 gives you an overview of the system environment in which you develop

and run your M7 RMOS32 programs. It also describes the technical environment

within which an M7 computer can be used to solve automation assignments.

Developing a simple program for the M7

Please read chapter 2 to get an idea of the steps that are necessary to develop a

user program. The procedure to be followed is illustrated with a simple example

program.

Structure and features of M7 RMOS32

Chapter 3 talks about the system structure and functions of M7 RMOS32. It

describes each of the separate components of M7 RMOS32 (M7 RMOS32 kernel,

M7 servers) and the interfaces and communication mechanisms between the

various components.

RMOS API function calls

Chapter 4 describes the features of the M7 RMOS32 kernel and discusses the

functions which the RMOS subsystem provides for task control and task

communication. This chapter also provides information and instructions on using

the RMOS function calls in your C user program and how you program the calls.

M7 API function calls

Chapters 5 , 6 a nd 7 sh ow you how to access process I/Os using the M7 API

function calls provided by the integrated M7 servers. They also contain information

on P bus communication with other modules, alarm processing, treatment of time

events, working with S7 objects, and describe the services of the operating mode

server and the free cycle server.

Communication

Chapter 8 i nforms you about the various communication mechanisms which the

M7 automation computer provides for communicating with other automation

systems via configured and non-configured connections.

Loadable Drivers

Chapter 9 describes how to implement programs using loadable drivers.

Design and development of a user program

Chapter 10 u ses an example to illustrate how to implement an automation

assignment in separate tasks of a C user program for an M7/S7-CPU and for an

M7 FM.

System Software for M7–300/400 Program Design

C79000-G7076-C851-02

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