User Guide

Program Methodology—Relational Operators
Siemens Building Technologies, Inc. 1-15
Less than (.LT.)
Unitary pre-APOGEE APOGEE BACnet
   
Syntax
if (value1.LT.value2) then...
value1,
value2
These values are defined as analog or digital numbers,
local variables, or point names.
Use
Compares two values to determine if the first value (value1) is less
than the second value (value2). The comparison is true if value1 is
less than value2.
Example
900 C IF THE ROOM TEMP IS LESS THAN 80,
910 C THEN SET THE SET POINT TO 70.
920 C
930 IF (RMTEMP.LT.80.0) THEN RMSET = 70.0
APOGEE PPCL User’s Manual
1-16 Siemens Building Technologies, Inc.
Not equal to (.NE.)
Unitary pre-APOGEE APOGEE BACnet
   
Syntax
if (value1.NE.value2) then...
value1,
value2
These values are defined as analog or digital numbers,
local variables, or point names.
Use
Compares two values to determine if the first value (value1) is not
equal to the second value (value2). The comparison is true if value1
is not equal to value2.
Example
600 C IF THE ROOM TEMP IS NOT EQUAL TO
610 C 80, THEN SET THE SET POINT TO 70.
620 C
630 IF (RMTEMP.NE.80.0) THEN RMSET = 70.0