Siemens SCALANCE X-200 Specifications download pdf (Page 10)

Description

2.1 Basic information on Ethernet switching

SCALANCE X-300

10 Operating Instructions, 01, A5E01113043

Configuration example

Sample electrical configurations with SCALANCE X310, SCALANCE X-200, SIMATIC S7-

300/400, SIMATIC ET 200, and operator panels as end devices.

S7-300S7-400

ET 200S

SCALANCE

X208

SCALANCE X310

SCALANCE

X208

SCALANCE

X208

S7-400 S7-300 S7-300

ET 200S ET 200S ET 200S

ET 200S

SCALANCE

X310

Figure 2-2 Star structure (electrical)

2.1.3 Ring with redundancy manager

Ring with redundancy manager

To increase availability, linear (bus) topologies of up to 50 switches can be closed to form a

ring:

• Optical: SCALANCE X-400, SCALANCE X-300

• Electrical: SCALANCE X-400, SCALANCE X-300, SCALANCE X-200 or ESM

Functional description

The two ends of the bus are closed to form a ring by an IE Switch X-300 operating as a

redundancy manager.

The redundancy manager function is enabled by the SELECT/SET button or implemented by

a setting in the software.

For more detailed information, refer to the configuration manual "Industrial Ethernet Switches

SCALANCE X-300 SCALANCE X-400."

In contrast to the ring ports of the other IE Switches X-300, the ring ports of the redundancy

manager are disconnected when the network is operating problem-free. The IE Switch X-300

operating in the redundancy manager mode monitors the connected bus over its ring ports

and switches the ring ports through if there is an interruption on the connected bus; in other

words, it restores a functioning bus over this substitute path. Reconfiguration is achieved

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Siemens SCALANCE X-200 Specifications Page 10