https://infosys.beckhoff.com/index.php?content=../content/1031/ej2502/2584719371.html&id=
https://infosys.beckhoff.com/english.php?content=../content/1033/tc3_plc_intro/3259158539.html&id=
https://stefanhenneken.wordpress.com/2016/07/04/iec-61131-3-arrays-mit-variabler-lnge/
http://www.drivesandsystems.com/codesys-array-sorting-for-plc-programs/
#TwinCat2
#connectivity
#TwinCat3
https://www.sps-forum.de/codesys-und-iec61131/91502-verkettete-liste-twincat2.html
http://www.contactandcoil.com/twincat-3-tutorial/structured-text/