title: FIFO list using arrays in ST (PLC)
body: <p>I'm working on a conveyor-sorter solution and need to store data about items in some organised manner. My first guess was FIFO.
  Do you know if there is any &quot;good practice&quot; way to program efficient FIFO list in Structured Text (PLC)? Or have you worked with similar project and solved that differently?</p>
  <p>Thanks in advance</p>