WattMaster WCC II - Manual (Page 106)

Section 3: Screen Descriptions
WCC II Operator’s Guide
Operator Interfaces 3-74
Divisor: 1
Due to memory limitations within the ECC/WCC II system, the
maximum value of any global analog is 65,535, and the largest
number which can be displayed on the screen is 9999. The value
of the global analog is divided by this number to lower the number
shown on the screen. The maximum divisor allowed is 9999.
i = n
Global value = (
Σ
Di / n) / divisor
i = 1
This is simply the form of the math equation used to generate the
value of this global analog.
If sampling data is unavailable, use 50 as the default value.
If the input value is not available or invalid, then the value of this
global analog will default to this number.
Range
The system has the capability of generating an alarm if the value
of this global analog is either inside or outside of the desired range.
If inside is selected, an alarm will be generated when the value of
the global analog is within the two limits specifi ed. If outside is
selected, an alarm will be generated if the value of the global is
outside the limits specifi ed.
Low Limit High limit
The Low and High Limits can be either an Address or a Value.
When you move the cursor to this fi eld, the word Address or Value
will appear. Since this is a choice fi eld, press the
until the desired choice appears and then press .
If you select Value as the choice for this fi eld, you can enter a
number which will serve as the alarm limit.
If you select Address, you can specify an address such as an analog
input or global analog to be used as the alarm limit.
Press to reset data.
After you enter data on this screen, or after you make any changes
to the screen, you should reset the data by moving the cursor to the
home position on this screen and then pressing
and then
, holding both keys down at the same time for an instant and
then releasing both keys. The computer will beep three times after
it has reset the data. You may also use the reset feature whenever
you want to cause the calculation process to start over.