Yamaha NHB32-C User Manual download pdf (Page 39)

CobraNet Primary & Secondary 35

ACU16-C & NHB32-C Owner’s Manual

ENGLISH

CobraNet Primary & Secondary

These two examples show how the CobraNet PRIMARY and SECONDARY ports can be

used to build redundancy into systems. In the ﬁrst example, if a primary connection fails,

the system automatically switches to secondary and operation continues uninterrupted.

However, if the switching hub fails, the entire system stops working. In the second example,

individual switching hubs are used for primary and secondary, so even if switching hub A

fails, operation continues on secondary via switching hub B.

Ethernet switching hub

NETWORK HUB AND BRIDGE

LINK CONDUCT

LOCK

ERROR

NETWORK HUB AND BRIDGE

LINK CONDUCT

LOCK

ERROR

NHB32-C

Ex. 1

Ex. 2

NHB32-C

ACU16-C ACU16-C

Ethernet switching hub A

NETWORK HUB AND BRIDGE

LINK CONDUCT

LOCK

ERROR

NETWORK HUB AND BRIDGE

LINK CONDUCT

LOCK

ERROR

Ethernet switching hub B

NHB32-C NHB32-C

ACU16-C ACU16-C

Primary CobraNet

Secondary CobraNet

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Yamaha NHB32-C User Manual Page 39