IFSTALE Examples

Example 1

The following expression replaces every value in the input stream older than 40 minutes with the value -1.

IFSTALE(SysTimeHour, 40 minute, -1)

Example 2

The following expression replaces every value in the input stream H100.TotalFlow older than 40 minutes with the value from the alternative stream Pump1.FlowRate + Pump2.FlowRate at the corresponding time.

IFSTALE(H100.TotalFlow, 1 hour, Pump1.FlowRate + Pump2.FlowRate)