Purpose: To generate alarms based on user defined conditions and includes automatic hysterisis to reduce multiple triggers from the same event.
Format: ALARM x > y , z , string
ALARM x < y , z , string
Description: x > y and x < y are the alarm conditions
z is the alarm hysterisis, once the alarm is triggered the condition must swing back by this amount before another event is triggered.
string is the alarm message with a length of up to 69 characters.
Example:10 ALARM SAT > SETPOINT + 5 , 2 , SUPPLY AIR TEMP IS TOO HIGH
In this example, the alarm is triggered when the supply air is 5 degrees above setpoint. Another alarm will not be triggered till the alarm resets itself by swinging thru 3 Degrees again ( 5 - 2 = 3 degrees) over setpoint.