Comparing the value of digital and numeric points to strings

In performance equations, you can use expressions that compare the value of a digital or numeric point to a string. For example, if the string "Run" is in the state set for digital point PumpStatTag, then the following expression is valid:

If 'PumpStatTag' <> "Run" then 1 else 0

The state set for a numeric point is the System State Set. The System State Set is the default state set for all points and it contains a collection of all the states that any point can use, such as Shutdown, Over Range, and I/O Timeout.

For example, the following expression is true if the numeric point sinusoid contains the digital state Shutdown from the System Digital State Set.

'sinusoid' = "Shutdown"