Unitary | Pre-APOGEE | APOGEE | BACnet | PXC.A |
|---|---|---|---|---|
● | ● | ● |
Syntax
If (pt1.eq ALMACK) then...
pt1 | A point name that is alarmable. |
Use
This status indicator determines the status of an alarm acknowledgement. This comparison is true if the point alarm state has been acknowledged.
Example 1
In the following statement, FAN is an alarmable point with Normal Acknowledge Required by Operator Enabled.
200 IF (FAN.EQ.ALMACK) THEN ON(PT1) ELSE OFF(PT1)
Action | System Response |
|---|---|
FAN is commanded ON | Alarm |
Alarm state is acknowledged | pt1 turns ON |
FAN is commanded OFF | pt1 turns OFF (Fan is OFF and Normal, but requires acknowledgement) |
FAN Return to Normal state is acknowledged | p1 turns ON |
Example 2
In the following statement, FAN is an alarmable point with Normal Acknowledge Required by Operator Disabled.
200 IF (TEMP02.EQ.ALARM) THEN ON(FAN)
Action | System Response |
|---|---|
FAN is commanded ON | Alarm |
Alarm state is acknowledged | pt1 turns ON |
FAN is commanded OFF | pt1 remains ON (Fan is OFF and Normal. The Return to Normal has been acknowledged internally.) |
Notes
For BACnet firmware, the ALMACK is true if any alarm event has been acknowledged; that is, OFFNORMAL, NORMAL, or FAULT