User Manual For - CONTROLLER/DATA RECORDER MultiCon CMC-99/141
Processing
parameter block
For this block the parameters are:
–
Scaling
,
–
Filter type
,
To enter the scaling menu press the button next to the
Scaling
label. The menu has the
following options:
a)
disabled
– no scaling of input data,
b)
linear
– after choosing this option, parameter appears:
•
Configure scaling
– submenu which allows the user to change unit in this
logical channel and rescale value using two points. This submenu contains
following options:
◦
Input unit
– read only parameter, it displays unit of the logical channel
source,
◦
Output unit
– unit of rescaled data,
◦
Point 1
block contains following options:
–
Input value
– value of point 1 before scaling,
–
Output value
– value of point 1 after scaling,
◦
Point 2
block contains following options:
–
Input value
– value of point 2 before scaling,
–
Output value
– value of point 2 after scaling,
In MultiCon, linear scaling can be done in with table placed below, but slope and offset are
constant values and they should be determined by user earlier.
Input value
Output value
Point 1
x
1
y
1
=slope*x
1
+offset
Point 2
x
2
y
2
=slope*x
2
+offset
Tab.7.2 The way to calculate the output value
Example:
The task is to rescale temperature from Centigrades, in which all of the MultiCon modules are
scaled, to degrees Fahrenheit. The formula, which should be used for this task is shown
bellow:
where:
T
F
– temperature in degrees Fahrenheit,
T
C
– temperature in Centigrades,
9/5 – slope,
32 – offset,
69
T
F
=
1.8
⋅
T
C
32
