An instance of this Function Block type generates a sawtooth
waveform in the range
{0..100}
with a period of 100
CLK
events. Its operation is modeled by the Execution Control Chart
(ECC) and algorithms shown below.
See the WAVEFORMS system
configuration for an example of the use of instances of this and
other waveform generation FB types.
ALGORITHM STEP IN ST : (* Clock step *)
IF QI THEN
IF
OUT >=100 THEN OUT := 0;
ELSE OUT := OUT + 1;
END_IF;
END_IF;
END_ALGORITHM
ALGORITHM RESET IN ST : (* Reset
output to zero *)
OUT := 0;
END_ALGORITHM