Siemens SIMATIC NET PROFIBUS Instructions d'exploitation télécharger pdf (Page 9)

SIMATIC NET PROFIBUS Optical Link Module OLM V4.0

Operating Instructions, 01/2013, C79000-G8976-C270-03

2 Introduction

2.1 Introduction

This section provides you with an overview of the functions of the PROFIBUS OLM4.0

product family.

What is possible?

PROFIBUS OLMs are designed for use in optical PROFIBUS fieldbus networks. They allow

the conversion of electrical PROFIBUS interfaces (RS-485 level) into optical PROFIBUS

interfaces and vice versa.

The modules can be integrated in existing PROFIBUS fieldbus networks with the known

advantages of optical transmission technology. A complete PROFIBUS fieldbus network can

also be set up with modules in a linear (bus), star or ring topology as well as any

combination of these topologies.

To increase the reliability of the fieldbus network in case of failure, the redundant ring is

supported.

Figure 2-1 PROFIBUS OLM with position of all interfaces, displays and adjustment options

LED displays

Channel 1/0

RS-485

DIL switch fo

modes

Operating voltage

Signaling contact

Sockets for

measuring levels of

the optical interfaces

(see section 5.6).

Channel 2 Channel 3

Optical channels

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 63 64

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Siemens SIMATIC NET PROFIBUS Instructions d'exploitation Page 9