Configuration 
4/07  UDC2500 Universal Digital Controller Product Manual  81 
Function Prompt  
Lower Display 
Selection or Range of Setting 
Upper Display 
English  Numeric 
Code 
English  Numeric 
Code 
Parameter  
Definition 
ALARM1 1114 
 
 
NO LAT 
LATCH 
 
 
0 
1 
LATCHING ALARM OUTPUT 1—Alarm 
output 1 can be configured to be Latching or 
Non-latching. 
NO LAT—Non-latching 
LATCH—Latching 
 ATTENTION  When configured for latching, 
the alarm will stay active after the alarm 
condition ends until the RUN/HOLD key is 
pressed. 
BLOCK 1115 
 
 
 
 
 
 
DIS 
AL1 
AL 2 
AL12 
 
 
 
 
0 
1 
2 
3 
ALARM BLOCKING—Prevents nuisance 
alarms when the controller is first powered 
up. The alarm is suppressed until the 
parameter gets to the non-alarm limit or 
band. Alarm blocking affects both alarm 
setpoints. 
DISABLE—Disables blocking 
AL1—Blocks alarm 1 only 
AL2—Blocks alarm 2 only 
AL12—Blocks both alarms 
 ATTENTION   When enabled on power up 
or initial enabling via configuration, the alarm 
will not activate unless the parameter being 
monitored has not been in an alarm condition 
for a minimum of one control cycle (167 ms). 
DIAGAL 1116 
 
 
 
 
 
 
DIS 
AL1 
AL 2  
DISWRN 
 
 
 
 
0 
1 
2 
3 
DIAGNOSTIC—Monitors the Current Output 
and/or Auxiliary Output for an open circuit 
condition. If either of these two outputs falls 
below about 3.5 mA, then an Alarm is 
activated.  This configuration is in addition to 
whatever was selected for AxSxTYPE. 
DISABLE—Disables Diagnostic Alarm 
ALARM 1—Alarm 1 is diagnostic alarm 
ALARM 2—Alarm 2 is diagnostic alarm 
DISABLE WARNING—Disables Output Fail 
message on lower display