I have 3 input and one output.1 setting ,2 is control ,3 is read and output is new control value. Read is measure by visa port controlling by control.
i have also 1 Auto/manual button and one is stop button.
Now condition is as below:
1. button on manual position.
control i/o same.
2.button on auto position.
if my setting and read value same, control i/o is same
if setting and read value different then 2 possibility: 1 is setting grater than read or setting less than read.
find error=(setting-read)/50.
add this (+or-)error to control value.
by this means control is auto controlled.
value limit of control is 0 to 100.
after this when auto button is turned to manual control indicate new value.
if i press stop then control indicate 0 initial value and auto/manual button show initial value manual.
Another things is that my read value is failed to reach above 500 until control reach 100 then stop button trigger automatically and control and A/M button reset to their initial value.
This project is like control read value as per desire setting value by means of controlling control value.
