RsLogix 500 - Allen Bradley PLC flasher
These are example of a flipflop, alternating, or flashing bit used in an Allen Bradley PLC. I offer these for educational purposes only and do not accept responsibility for any other use. I do not offer any guarantee, to their applicability to any system nor the reliability of the timer. In reality the timers will not be "precise" but in many cases will be sufficient.
Video of the above logic.