In this sheet several designs of PLC programs are presented that allow users to generate various signals (triangle signal, saw signal, rectangular signal) with possibility of changing the generated signal by PLC setpoints (amplitude, length of the period, slope for rising and falling edge).
Simple designs of binary signal generators (on their outputs logical 0 and logical 1 are generated) are also presented. One design utilizes two Delay blocks and one design uses one Timer block and one Delay block.
These signals may be used in many ways in the controller logic or for control of external devices. Their properties may be changed easily to alter their function and this makes them suitable for universal usage.