Siemens SINEC L2 User Manual

System Description S5-95U, SINEC L2
1.6.3 Mixed Configuration of RS 485 and Fiber Optics Transmission
Technology
You can configure networks with combined RS 485 and fiber optics transmission technologies by
using the SINEC L2FO repeater adapter.
Figure 1-21 is an example of this type of configuration.
Figure 1-21. Mixed Configuration with RS 485 and FO Transmission Technology
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SINEC L2FO bus terminal
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Active star coupler AS 501
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S5-95U S5-95U
Repeater RS 485 with
SINEC L2FO repeater
adapter and terminating
resistor connected
Bus terminal RS 485
Duplex fiber optic cable:
glass or plastic fiber
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S5-95U
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Glass: max.1400 m /4.592 ft
Plastic: min. 5 m /16.20 ft
max. 25 m /81 ft
You can also link two SINEC L2 networks of the RS 485 technology type directly via a fiber optic
cable without using an active star coupler as shown in Figure 1-22.
Figure 1-22. Two SINEC L2 Networks of the RS 485 Technology Linked
via Fiber Optic Cable
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RS 485 technology
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Terminating resistor
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RS 485-Technology
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RS 485 Repeater
with SINEC L2FO
repeater adapter
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FO cable
1-28 EWA 4NEB 812 6112-02

Siemens SINEC L2 Specifications

General

Brand	Siemens
Model	SINEC L2
Category	Controller
Language	English