# Start timer configuration **URL:** \ **Category:** Flowable Application\ **Created:** [November 17, 2017, 11:50am UTC](https://forum.flowable.org/t/start-timer-configuration/1221 "2017-11-17T11:50:46Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![clara.gaset](https://avatars.discourse-cdn.com/v4/letter/c/cc9497/32.png) [@clara.gaset](https://forum.flowable.org/u/clara.gaset)\ **Post date:** [November 17, 2017, 11:50am UTC](https://forum.flowable.org/t/start-timer-configuration/1221/1 "2017-11-17T11:50:46Z")
Hi, I’ve configured an intermediate timer setting the time duration to PT30S and I had no problems. However, this configuration does not work in a start timer. Anyone knows if it’s possible to set a start timer that automatically starts the process every X time? Or it’s necessary to start it manually? Thanks ![diagram1](https://cdck-file-uploads-canada1.s3.dualstack.ca-central-1.amazonaws.com/flex035/uploads/flowable/original/1X/0d3963de1bc3510e41c8c280b2364a9d9bcf41f6.PNG) ---
**Author:** ![tijs](https://avatars.discourse-cdn.com/v4/letter/t/bc79bd/32.png) [@tijs](https://forum.flowable.org/u/tijs)\ **Post date:** [November 17, 2017, 4:19pm UTC](https://forum.flowable.org/t/start-timer-configuration/1221/2 "2017-11-17T16:19:08Z")
Hi, PT30S works for a timer start event, but it will start the process instance only once. In the documentation you can find how to define a time cycle value: [http://www.flowable.org/docs/userguide/index.html#timerEventDefinitions](http://www.flowable.org/docs/userguide/index.html#timerEventDefinitions) Something like this will start the process instance every 5min starting at the full hour: 0 0/5 \* \* \* ? Best regards, Tijs ---
**Author:** ![clara.gaset](https://avatars.discourse-cdn.com/v4/letter/c/cc9497/32.png) [@clara.gaset](https://forum.flowable.org/u/clara.gaset)\ **Post date:** [November 20, 2017, 8:46am UTC](https://forum.flowable.org/t/start-timer-configuration/1221/3 "2017-11-20T08:46:28Z")
Thanks, it works now! I found [this](https://www.freeformatter.com/cron-expression-generator-quartz.html) website to generate the expressions, I share it in case anyone else needs it.