WattMaster WCC III part 4 - Manual (Page 160)

WCC3.EXE SCREEN DESCRIPTIONS
WCC III Technical Guide 3-156
Mode 10: Multi-Proportion
The Global Analog Mode 10 Multi-Proportion Screen was created
to proportionally adjust a non linear Analog value to a linear analog
value. This is generally used to straighten the analog curve of a
non linear device to a much truer analog linear curve. There are
six “correction” points that are utilized on this screen and they are
a “starting point” with four middle points and an “end point” for
this multiple linearization process. All six of the correction points
must be fi lled out appropriately. If only two simple “correction”
points are required, then use the Global Analog Mode Proportion
Screen.
As value from _ _ _ _ varies from _ _ _ _ adjust the
global to _ _ _ _.
A valid WCC III analog structured value must be used as an analog
input value for this screen to operate correctly. Satellite Analog
Input (XXXAY), Satellite Data Register “a”( XXXRYa), Satellite
Data Register “b”(XXXRYb), Satellite Analog Output (XXXPY),
Global Analog (GAZZZ), where XXX equals 1 to 239, Y equals 1
to 8, and ZZZ equals 1 to 256.
Entering a value in this blank will allow this global analog to
proportionally adjust a non linear analog value to a linear analog
value. A starting value, 4 middle values, and an ending value are
also required for both sides for this proportional adjustment to
function.
Examples:
As value from 1A1 varies from 45 adjust the global to 0
55 30
60 45
65 60
70 75
75 90
This changes or narrows the scaling range of sensor 1a1 from 45
to 75 to 0 to 90. This new scaling factor is this Global Analog’s
value.
As value from 1A1 varies from 0 adjust the global to 0
100 30
200 45
300 60
400 75
500 90
This changes or narrows the scaling range of sensor 1a1 from 0
to 500 to 0 to 90. This new scaling factor is this Global Analog’s
value.
Analog Global Multi-Proportion Mode Screen
ANALOG GLOBAL - MULTI-PROPORTION MODE
Analog Global Screen’s WCC III Logical Address is GAXXX, where GA = Global Analog and XXX = Global Analog Address