Configure the PEM instance trigger settings

The PEM instance's Trigger Settings in the Common Data Attributes section associates the PEM instance with a Boolean attribute that acts as the PEM object trigger, for example, when a batch of material has finished entering a piece of equipment. Production attributes are not updated when using an input source until the object is triggered.

You can control:

• What triggers the PEM instance

• Whether to automatically reset the trigger after triggering an event

You can configure a PEM instance trigger to:

• Link the PEM instance trigger with a Boolean attribute by selecting the Use Input Source check box. When the Boolean attribute is set to True, the PEMInstance.Trigger extended attribute becomes True at run time.

  

• Trigger manually by clearing the Use Input Source check box. You can specify to reset the value of a trigger extended attribute of a PEM object to True at run time.

  

• Automatically reset by selecting the Auto Reset check box. If the Use Input Source check box is selected, then the I/O point entered as the input source must accept a write so that the OCO can write to the I/O point when the trigger is reset to 0.

For information about what attributes are created when a PEM instance is triggered, see Attributes created when a PEM instance is triggered.

For information about how the trigger attribute is affected by the Auto Reset setting during run time, see Effect of the instance trigger auto reset setting.