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10 rs 485 repeater, Rs 485 repeater – Siemens Simatic S7-400 User Manual

Page 421

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10-1

S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07

RS 485 Repeater

In this Chapter

In this chapter, you will find a detailed description of the RS 485 repeater.

Included in the description are:

The purpose of the RS 485 repeater

The maximum cable lengths possible between two RS 485 repeaters

The functions of the individual operating elements and terminals

Information about grounded and non-grounded operation

Technical specifications and the block diagram

Further Information

You will find further information on the RS 485 repeater in the manuals
Hardware and Installation in the Chapter “Configuring of an MPI or PROFIBUS DP
network”.

Chapter Overview

Section

Description

Page

10.1

Application and Characteristics;
(6ES7972-0AA01-0XA0)

10-2

10.2

Appearance of the RS-485 Repeater; (6ES7972-0AA01-0XA0)

10-3

10.3

RS 485 Repeater in Ungrounded and Grounded Operation

10-4

10.4

Technical Specifications

10-6

10

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