What is the difference between a "Clock Time" control and a "Time from Start" control?
A Clock Time control will create a condition based on the clock time during an extended period simulation. If the extended period simulation is for a period longer than 24 hours, this condition will be triggered every day at the specified time.
Example of clock time control are as follows:
"IF Clock Time < 8:30 PM THEN PMP-2 Pump Status = Off "
"IF Clock Time >= 8:30 PM THEN PMP-2 Pump Status = On"
When using clock time, midnight is the earliest possible time when using the less than or greater than operators. For example using the above two statements, the pump will turn turn off from midnight to 8:30 PM and turn on between 8:30 PM and 11:59 PM.
"IF Time from Start >= 36 hours AND Time from Start < 72 hours THEN TCV-1 Status = Closed ELSE TCV-1 Status = Inactive"
Creating Controls - Conditions, Actions and Control Sets
Creating Controls - Conditions, Actions and Control Sets for WaterGEMS and WaterCAD SELECTseries 6