Using the SIMULATE parameter for both the DeltaV I/O blocks and the fieldbus I/O blocks, you can manually inject field measurement values and status to check out control logic, alarming, displays, and so on. By changing the status or value associated with a measurement, the action taken by control logic execution in the DeltaV Simulate environment can be examined. You can also use this capability to test whether block parameter values and status are displayed correctly in the screens you designed. By changing the measurement value through the SIMULATE parameter, you can force an alarm condition, which allows you to verify assigned alarm priority as well as the manner in which alarms become visible to the operator (for example, the Event Chronicle and alarm banner in DeltaV Operate).