Pomiar i analiza czasu wykonania algorytmów PID2DOF w sterownikach Siemens S7-1500

摘要

The aim of this paper is the analysis of performed measurements of PID algorithm execution times in PLC S7-1500. The lack of constant calculation time of the controller algorithm for its various realizations is presented. Real-time digital control must be calculated in a defined time regime which depends on the sampling time of the controller. The measurements were made using the "RUNTIME" instruction. The algorithm was measured by the PID2DOF controller proposed by the authors (which was written in SCL Language) and the original PID Compact V2 (Siemens) solution.