For RIO drops, the switchover is bumpless: the state of outputs is not affected by the switchover. During Hot Standby operations, each PAC maintains an independent, redundant owner connection with each RIO drop. Each PAC makes this connection via IP address A or IP address B, depending on the A/B/Clear rotary switch designation for its CPU. When a switchover occurs, the new primary PAC continues to communicate with I/O via its pre-existing redundant owner connection.

NOTE: The switchover may not be bumpless with respect to distributed equipment outputs.

Released for: Schneider Electric India