User Manual UMAX030541. Version V1 29-116
1.6 Math Function Block
There are 4 mathematic function blocks that allow the user to define basic algorithms.
Math function block Z = 1 to 4 will be enabled based on sub-index Z in object 4000h
Math
Enable
.
Figure 11
– Math Function Block Objects
A math function block can take up to four input signals, as listed in Table 5 in Section 1.3.
Each input is then scaled depends on
the associated scaling and gain objects. A “Math
Input X” is determined by the corresponding sub-index X = 1 to 4 of the objects 4y00h
Math Y Input Source
and 4y01h
Math Y Input Number.
Here, y = 1 to 4; corresponding
the Math 1- Math 4.
Inputs are converted into a percentage value based on objects 4y20h
Math Y Scaling 1
FV
and 4y22h
Math Y Scaling 2 FV
. Before being used in the calculation, these objects
apply the resolution shift defined by object 4y03h
Math Y Decimal Digits FV
. As with any
other function block using a control source for the X-Axis in a conversion, the scaling
objects should be selected to match the values in the control’s corresponding objects as
per Table 5.
For additional flexibility, the user can also adjust object 4y40h
Math Y Input Gain.
This
object has a fixed decimal digit resolution of 2, and a range of -100 to 100. By default,
each input has a gain of 1.0.