WattMaster WCC II - Manual (Page 116)

Section 3: Screen Descriptions
WCC II Operator’s Guide
Operator Interfaces 3-84
The compare mode generates the ON or OFF value of the binary
global depending on how one analog value compares to another
analog value.
Value ON if 1A4 > 2A5
Default value: 25 20
In the above example, the global binary will be ON when the value
of 1A4 (analog input #4 on satellite controller #1) is greater than
2A5 (analog input #5 on satellite controller #2). If the analog value
is unavailable, the system will use the default value below the
analog value. For example, if satellite controller #1 was off-line,
the value for analog input #4 on satellite controller would default
to 25.
Entering a Constant Number
If you want to enter a constant for one of the two values, leave
the top blank and enter a number in the default space as shown
below:
Value ON if 1A4 > ------
Default value: 25 20
In the above example, the value of the global binary will be ON
when 1A4 is greater than 20.
Math Operators (>, = =, !=)
The math operators are in a choice fi eld and therefore the list of
available choices will be displayed at the bottom of the screen:
CHOICE (>, = =, !=)
Make your selection by pressing the once for each
choice until the desired mode has been selected, and then press
.
Math Operator Description
> The statement is true when the
value to the left of the symbol is
greater than the value to the right.
(Or, the statement is true when
the value to the right is less than
or equal to the value to the left.)
= = The statement is true when the
value to the left is equal to the
value to the right.
!= The statement is true when the
value to the left of the symbol
does not equal the value to the
right of the symbol.
BINARY GLOBAL SCREEN
COMPARE MODE
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BINARY Global #: 2 Name is GB2
Description: Enthalpy Comparison On Message #: 10 Use OA
Mode 2: Compare Off Message #: 11 Use RA
Value ON if 1A4 > 1A5 Hysteresis +/- GA3
Default value : 25 20 5
In local set this global defaults to Off
-----------------------ALARM-------------------------
Set Condition: None Type: 0 Message 0
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