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Preface

SIMATIC TIWAY I Series 500 NIM User Manual

Preface

This manual contains the information necessary to install and operate the

Series 500 Network Interface Module (NIM). The following information is

provided.

• NIM specifications

• Installation and testing procedures

• Operating instructions and descriptions

• SIMATIC TIWAY I primitive descriptions and examples

This manual is organized as follows:

• CHAPTER 1 — TIWAY I OVERVIEW contains an overview of the

TIWAY I network and an explanation of how the Series 500 NIM

operates within this network. NIM specifications are also defined.

• CHAPTER 2 — NETWORK DESIGN CONSIDERATIONS describes

possible network design configurations, and the use of modems with

TIWAY I. Local Line cabling, biasing, and termination are also

discussed.

• CHAPTER 3 — INSTALLATION describes NIM installation and

diagnostic procedures.

• CHAPTER 4 — NIM PRIMITIVES describes NIM operation and the

primitive subset supported by the NIM.

• APPENDIX A — PM550 CIM REQUIREMENTS contains procedures

for Local Line biasing and termination for networks that contain a

mixture of Series 500 NIMs and SIMATIC PM550 Computer

Interface Modules (CIM).

• APPENDIX B — FLOATING POINT NUMBERS defines floating point

representation used in the TIWAY network.

• APPENDIX C — NETWORK CONFIGURATION DATA SHEET

contains a form that will help you plan your network.

• APPENDIX D — NETWORK EVALUATION FORM contains a TIWAY

network evaluation form. You can submit the completed form to

Siemens for a free network evaluation.

Manual Overview

Manual

Organization

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 137 138

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