IFBAD Examples

Example 1

This example uses the following tag name:

• Pump101.Flow measures the flow rate of a pump in liters per second (L/s)

The following expression returns the flow rate of a pump, but any "bad" quality values are replaced with -1.

IFBAD( Pump101.Flow, -1 )

Example 2

The following expression

IFBAD( 60 / SysTimeSec, -1 )

Example 3

This example uses the following tag names:

• Pump101.Flow measures the flow rate of a pump in liters per second (L/s)

• Pump102.Flow measures the flow rate of a pump in liters per minute (L/min)

The following expression returns the flow rate of a pump, but any "bad" quality values are replaced with the value from a second pump at the corresponding time.

IFBAD( Pump101.Flow, Pump102.Flow )

The units for each tag in the expression are implicitly converted to match the units of the first tag, so the expression's results are in liters per second.