Last edited 2 months ago
by Max Mustermann

Profibus optical link module

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1 Introduction[edit | edit source]

The Optical Link Module (OLM) is for wide distances over 50m. On the front there is the Profibus plug (CH1) and the DIL switches (S0 – S8).
At the bottom there are the Fiber Optical plugs (CH2 and CH3) with a bajonet plug.

2 DIL-Switches configuration[edit | edit source]

2.1 General Information[edit | edit source]

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DIL Switch Function
S0 CH1, segment monitioring (0=off)
S1 + S2 CH2 setting mode (1)
S3 + S4 CH3 setting mode (1)
S5 CH2 - reduced optical transmit power (0 = reduced) below 50m
S6 CH3 - reduced optical transmit power (0 = reduced) below 50m
S7 Compatibility to older versions of OLM (0 = off)
S8 Reserved

(1) see at the OLM Manual english

2.2 Configuration at site[edit | edit source]

Here is the standard configuration for the site.
Connected is the Profinet Plug on CH0 and the Fiber Optic cable on the CH2 by both OLM's.

S0 = 0
S1 = 1
S2 = 0
S3 = 0
S4 = 0
S5 = 1
S6 = 0
S7 = 0
S8 = 0