PDI

The PDI system initialization parameter specifies the XRF primary delay interval, in seconds, in a SIT for an active CICS® region.

PDI={30|decimal-value}
The minimum delay that you can specify is 5 seconds. This is the time that must elapse between the (apparent) loss of the surveillance signal in the alternate CICS region, and any reaction by the active CICS region. The corresponding parameter for the alternate CICS region is ADI. PDI and ADI need not have the same value.