https://forge.codesys.com/forge/talk/CODESYS-V2/thread/45e571d49d/2020-02-27T20:26:46.053000ZRecent posts to many questions2020-02-27T20:26:46.053000Z2020-02-27T20:26:46.053000ZIgor Petrovhttps://forge.codesys.com/u/igor-petrov/https://forge.codesys.com3d1b0ab2ce46d32d19f3f7c5a90c61fd3bc9ac86

<div class="markdown_content"><p>Usually in IEC SFC you work with actions. So you have to write the POU call from an action. In one step you can include the action with qualifier S and activate (start) it. In other step you can use the action with qualifier R and deactivate (stop) it. Moreover with qualifier SD you may activate the actions later in certain time.</p> <p>If you need such behavior in one single step then you may program the POU calls inside the action with other language or with included SFC again.</p> <p>Indeed it is extremely rare library and certainly not for beginners. Honestly I cannot think out a situation when I really need tasks administration in IEC programming practice. Probably you have to change the program decomposition strategy to exclude it.</p> <p>'F1' does not work?</p> <p>Sometimes the library SysLibCom do not work with some untypical configurations like 1.5 stop bit etc. Could you connect a terminal and control receiving and transmission separately with different settings? See attached example.</p> <p><a class="" href="https://forum.codesys.com//download/file.php?id=74" rel="nofollow">RS232_Sender.pro <span><span>[36.63 KiB]</span></span></a></p></div>

2020-02-27T20:26:44.668000Z2020-02-27T20:26:44.668000Znivanescuhttps://forge.codesys.com/u/nivanescu/https://forge.codesys.comdf64a203bc95879f7165a713bfd8aa8b72c98b94

<div class="markdown_content"><p>Ok, but at least the first question is related to codesys i think.</p></div>

2020-02-27T20:26:40.899000Z2020-02-27T20:26:40.899000ZPeder Möllerhttps://forge.codesys.com/u/peder-moeller/https://forge.codesys.come496d408be96aed06809211123207718d1ad8b94

<div class="markdown_content"><p>Hello</p> <p>Some of your questions are hardware related and i think that Kontron could help you with this.</p> <p>Send them a mail on e <a class="" href="mailto:GSS@kontron.com">GSS@kontron.com</a> e </p></div>

2020-02-27T20:26:39.544000Z2020-02-27T20:26:39.544000Znivanescuhttps://forge.codesys.com/u/nivanescu/https://forge.codesys.comff373a32138fa1243879b92efc298787c62501dd

<div class="markdown_content"><p>I have started to work with codesys recently, on a Think IO-P plc. But i have many uncleared things that i haven't find in documentation. Hope the moderators can clarify some things for me.</p> <p>1) Can i stop a POU and restart it later from the same step (in SFC)</p> <p>2) with my plc i can't find the syslibtask library so i cannot work with tasks (suspend, resume). Think io does not support this?</p> <p>3) How can i acces the online help?</p> <p>4) Serial port functions does not work on plc, although the port seems to be opened </p> <p>For the beginning i really hope someone can give help me with some answers.</p></div>