title: clock pulse generator for a PLC
body: <p>I am working with PLCs trying to design a water tank. On one section of the design I am asked to create a clock pulse generator. I am currently trying to do this using ladder diagrams. </p>
  
  <p>I believe I have the logic correct just cant seem to put it together. I want a counter to count the clock pulses that I generate, then I store these pulese in a data memory to ensure the count is retained if the system is switched off and on. </p>
  
  <p>question is how do I design this clock pulse generator. </p>
  
  <p>Kind regards</p>