CIMPLICITY network/cabling redundancy for Allen Bradley Communications requires each Allen-Bradley PLC to be connected to two different physical networks.

Following are some examples of redundant networks as regards Allen-Bradley PLCs and CIMPLICITY software.

The CIMPLICITY computer has two KT (or KTX) cards. (A combination of one KT and other KTx is also allowed). An Allen-Bradley PLC is connected to computer using two Data Highway plus networks (cables).

In order to have these networks redundant, user has to take following steps.

1. Configure a driver in RSLinx for each card (AB_KT-1 and AB_KT-2). The Data Highway Plus node address for the two drivers have to be different.

2. In CIMPLICITY device configuration, provide two network addresses for the device. You can specify these addresses by separating them by a ";" (semicolon).

For example, if the two network addresses for a device are AB_KT-1,AB:LOCAL,22 and AB_KT-2,AB:LOCAL,22, the Network Address field in device configuration is:

    AB_KT-1,AB:LOCAL,22;AB_KT-2,AB:LOCAL,22

The CIMPLICITY computer has one Ethernet card and one KT (or KTx) card. An Allen-Bradley PLC is connected to computer using the Ethernet and Data Highway Plus networks.

In order to have these networks redundant, user has to take following steps.

1. Configure a driver in RSLinx for each card (AB_ETH-1 and AB_KT-1).

2. In CIMPLICITY device configuration, provide two network addresses for the device. You can specify these addresses by separating them by a ";" (semicolon).

For example, if the two network addresses for a device are AB_ETH-1,AB:LOCAL,22 and AB_KT-1,AB:LOCAL,22 , network address field in device configuration is:

    AB_ETH-1,AB:LOCAL,22;AB_KT-1,AB:LOCAL,22

 Important: CIMPLICITY software currently does not support network redundancy for Allen-Bradley Communications when the computer has two Ethernet cards.

More information

	Features of network redundancy.
	Unsolicited data.
	About Allen-Bradley Communications.

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