Unitary | Pre-APOGEE | APOGEE | BACnet | PXC.A |
|---|---|---|---|---|
| ● | ● | ● | ● |
Syntax
@PDL
Use
This command identifies the peak demand limiting priority level indicator. The @PDL command is typically used in one of the following situations:
- To test if a point is currently at PDL priority, an IF/THEN/ELSE statement would look like the following:
300 IF (SFAN.EQ.@PDL) THEN ON(HORN)
- To release a point in the device from PDL to PPCL priority, an example of program code might look like the following:
700 RELEAS (@PDL,SFAN)
NOTE:
Using the @ priority indicator in this manner will not release the point if it has a higher priority (EMER, SMOKE, and OPER.
Notes
- It is not recommended to release points from PDL priority unless absolutely necessary.
- For APOGEE and pre-APOGEE firmware, if the @ priority indicator is not used, the automation station will release points from PDL to NONE.
- For BACnet firmware, the automation station releases the slot corresponding to PDL in the Command Priority Table. The value of the point is set based on the highest slot in the Command Priority Array; relinquish default is used if the Command Priority Array is now empty.