58
RANGE( AI1, Min 10, Max 200)
For analogue input AI1 the function defines the minimum limit as 10 and
the maximum limit as 200. In case that analogue input AI1 would be
connected to a potentiometer to fix a preset time (PT) of a timer with time-
base 100ms, the result would be a variable time between 1.0 and 20.0
seconds, according to the position of potentiometer.
Concerning analogue outputs AQ, minimum and maximum value allow to
rate the effective tension value of output 0÷10V. Below an example:
RANGE( AQ1, Min -200, Max 500)
For analogue output AQ1 the minimum limit is fixed as –200 and the
maximum limit is fixed as 500. This means that setting numeric value of
output as –200, the output AQ1 will be 0 Volt while setting the numeric
value as 500 the output AQ1 will be 10Volt. In case that entered value are
not included in the interval specified by function RANGE, the output is kept
within minimum and maximum values. For intermediate values, output
tension is rated according to following formula:
Output(volt) = ((Value – Min) * 10) / (Max – Min)
Maximum resolution for output AQ1 and AQ2 is 8 bit.
Concerning PID outputs, minimum and maximum values allow to rate the
value for the output of PID control algorithm. Below an example:
RANGE( PID1, Min 100, Max 500 )
For PID1 output , minimum limit is fixed as 0 and maximum limit is 500.
This means that for output 0% the PID output will be equals to minimum
fixed value and for output 100% the PID output will be equals to maximum
fixed value. For each PID [1..8], minimum and maximum values of output
are initialized at starting as 0 and 10000.
2.2.17 Contact NOT
The operation NOT modifies logic value from 0 to 1 or from 1 to 0.
To Next Page
Loading...
