Indicates the active IP address. Possible values are 0: The main IP address is selected, 1: The first alternative or backup IP address is selected, 2: The second alternative or backup IP address is selected, or 3: The third alternative or backup IP address is selected.

If the Ethernet or RAS Interface is connected, this Tag indicates which one of the four configured IP addresses is in use. If the Interface is disconnected, this Tag indicates which IP address is used first on the next connection attempt.

During the connection process, if the active IP address is not available, the I/O Interface tries to connect using the next alternative IP address. If the connection with the alternative IP address works, it is configured as the active IP address (automatic switchover).

To force a manual switchover, write values from 0 (zero) to 3 (three) to this Tag. This forces a reconnection with the specified IP address (0: Main IP address or 1, 2, 3: Alternative IP address) if the Driver is currently connected. If the Driver is disconnected, this Tag configures the active IP address for the next connection attempt.