https://forge.codesys.com/forge/talk/Engineering/thread/3eac9e9f03/2020-02-27T13:47:35.460000ZRecent posts to How to understand the action ,transition...2020-02-27T13:47:35.460000Z2020-02-27T13:47:35.460000Ztianlinhttps://forge.codesys.com/u/tianlin/https://forge.codesys.comc9f810074d541664101742a658d38637ac18e13b

<div class="markdown_content"><p>thanks! you explained ckearly. thank you very much</p></div>

2020-02-27T13:47:35.402000Z2020-02-27T13:47:35.402000Ztimvhhttps://forge.codesys.com/u/timvh/https://forge.codesys.com133ed7135bdbc44affb2814dbe25ee65346b890e

<div class="markdown_content"><p>An Action is a piece of code which can act on the variables of the corresponding POU.<br/> You can call this from the POU itself, or from another POU.<br/> The main purpose is to better structure the application and to make it more readable.<br/> It is also possible to use this in V2.3 and is therefore also implemented in V3 to make it backwards compatible.<br/> You can regard this as a Method, but without any arguments.</p> <p>A transition is actually only used in combination with SFC POU's where the transition is the condition to jump to another Step.</p></div>

2020-02-27T13:47:35.350000Z2020-02-27T13:47:35.350000Ztianlinhttps://forge.codesys.com/u/tianlin/https://forge.codesys.com00e3f0d680902245173fca1ed06138592d95496a

<div class="markdown_content"><p>How to understand and use the action ,transition...which belong to function block and programme!</p></div>