Siemens SIMATIC TIWAY 1 User Manual download pdf (Page 15)

Overview

1-6

1.3 PPX:500-5054 & PPX:505-7354–Dual Communication Channels

Peerlink

models PPX:500-5054 and PPX:505-7354 can operate like the

PPX:500-5053, but also offer a dual communication channel option. By

setting a switch on the module, you may use a single communication

channel with both active and passive monitors.

In the dual communication channel option, if one network cable becomes

disabled, communication automatically switches to the other network

cable, allowing network communication to be maintained without

interruption. Communication will always occur on the channel which

detects the most active stations on the network. This model might be

preferable in applications where the Peerlink cables could be easily

damaged.

Figure 1-3 illustrates a typical network using the dual communication

channel option. The passive monitor option is not available when dual

communication channels are used.

Network

Address

N.A.

Network

Address

#16

ACTIVE

MONITOR

PEERLINK

MODULE

SERIES

505

P/C

N.A.

= network address

SERIES

500

P/C

SERIES

500

P/C

SERIES

505

P/C

PEERLINK

MODULE

PEERLINK

MODULE

PEERLINK

MODULE

CHANNEL A

CHANNEL B

Figure 1-3

Dual

Channel Network

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 106 107

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