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1.0
Introduction
Fiber Optic (SINGLE MODE and/or MULTI MODE) has been used for signal
transmission in automation for communication more and more often.
The main advantage of Fiber Optic is its immunity to electromagnetic
interference, slight radiation and high transmission capacity
1.1
Use of the multiplexer
Using a pair of multiplexers several absolutely independent transmission channels
over one optic line can be estabilished. The individual channels can be used that
way:
- several independent simultaneous applications (according to the number of
channels),
- simultaneous data transfer over one channel and control, status or clock signals
over the rest of channels.
Multiplexer can work without any setting.
2.0
Operation principles
Multiplexer asociates following serial channels to one pair of fibers:
Interface / model
Number of RS232
Number of RS422
The data rate in one channel is absolutely independent on other channels and the
data rate can be any range from zero to maximum 230 000 kbps.
Multiplexer is independent on communication protocol.
3.0
Installation
There are three different problems of installation to discuss: RS232 or RS422 link
connection,
optic fiber
interconnecting and power supply connection.
3.1
Metallic interfaces connection
All interfaces except optic fiber and supply input are taken out to DB9 female
connector. The connector description is in tables shown in following chapters.
The interfaces concentrated to one connector can be distributed to separate
connectors by ELO E24E and ELO E24F cables.
E246
E247
4
4
--
--
link connection, respectively two multiplexers
E248
E249
4
--
--
2
3
ELOE246,7,8,9,A,BZKE001
E24A
E24B
--
--
2
2
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