User Guide

Program Methodology—Resident Points
Siemens Building Technologies, Inc. 1-49
Battery condition ($BATT)
Unitary pre-APOGEE APOGEE BACnet
  
Syntax
$BATT
Use
This resident point is used with field panels that can monitor the
strength of their backup battery. Either a numeric value or the
backup battery status indicators indicate the current status of
$BATT.
$BATT numeric values are 0, 50, or 100.
• A $BATT value of 0 indicates the battery has discharged and
must be replaced.
• A $BATT value of 50 indicates the battery is about to discharge
and should be replaced to prevent any loss of data.
• A $BATT value of 100 indicates the battery does not need to be
replaced.
$BATT status indicators are LOW, DEAD, or OK.
• If $BATT status is LOW or DEAD, then the battery has
discharged and must be replaced.
• If $BATT status is OK, then the battery does not need to be
replaced.
Example 1
200 IF ($BATT.EQ.0) THEN ALARM(P26BAT)
Example 2
210 IF ($BATT.EQ.DEAD) THEN ALARM(P26BAT)
See also
LOW, DEAD, OK
APOGEE PPCL User’s Manual
1-50 Siemens Building Technologies, Inc.
Decimal time (CRTIME)
Unitary pre-APOGEE APOGEE BACnet
   
Syntax
CRTIME
Use
This resident point maintains the current time and stores the value in
a decimal format. The following examples show how CRTIME stores
values:
7:15 a.m. = 7.25
7:30 p.m. = 19.50
The values for this point can range from 0.00 to 23.999721.
Example
500 C
501 C THIS CODE DEFINES A TIME PERIOD
502 C FROM 6:45 A.M. TO 5:30 P.M. FOR
503 C SFAN TO OPERATE.
504 C
510 IF (CRTIME.GE.6.75.AND.CRTIME.LE.17.50)
THEN ON(SFAN)ELSE OFF(SFAN)
CRTIME can also be used to assign the current value of time to a
virtual LAO type point which allows you to read the current time on a
graphic, point log, etc. For example:
100 VTIME = CRTIME
Notes
CRTIME is updated every second.