Ob20 Time Delay Interrupt Tia Portal Organization Block

Author Dalbo 05 Apr 2026

Ob20 is an organization blockthat is called and executed by the operating system, but we have to tell the operating system when to call this ob20 Ob20 ist ein organisationsblock, der vom betriebssystem aufgerufen und ausgeführt wird, aber wir müssen dem betriebssystem mitteilen, wann. The operating system gets the information from the user plc programto call this ob20, it will wait for th…

Tia Portal - OB20 Time Delay Interrupt Organization Block

Ob20 Time Delay Interrupt Tia Portal Organization Block

These obs are started using the srt_dint instruction, where you define. Was ist time delay interrupt (ob20) With each call of ob20, the instruction add is executed and the tag testcurrcount is incremented by 1

Ob20 is called only once after expiration of the delay time defined with srt_dint.

What is time delay interrupt (ob20) Ob20 is an organization block that is called and executed by the operating system, but we have to tell the operating system when to call this ob20. 延时中断 OB 在经过一段指定的时间延时后，才执行相应的 OB 中的程序。 S7-1200 最多支持 4 个延时中断 OB ，通过调用“SRT_DINT”指令启动延时中断 OB 。在使用“SRT_DINT”指令编程时，需要提供 OB . According to sheet ob20 is a time delay interrupt which i included in my project.

Note time synchronization for all profinet interfaces take place within the set‐tings for time synchronization of the profinet interface [x1] The web server must also be activated enable web. Let's check how we can combine ob's We can for example start an operation at a specific time of day and finish the operation with a time delay interrupt.more