# SFC programming in B&R AS **URL:** \ **Category:** B&R Software & Runtime\ **Tags:** automation-studio\ **Created:** [December 19, 2024, 10:05am UTC](https://community.br-automation.com/t/sfc-programming-in-b-r-as/5269 "2024-12-19T10:05:36Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Sergei\_Novik](https://avatars.discourse-cdn.com/v4/letter/s/FF8800/32.png) [@Sergei\_Novik](https://community.br-automation.com/u/Sergei_Novik)\ **Post date:** [December 19, 2024, 10:05am UTC](https://community.br-automation.com/t/sfc-programming-in-b-r-as/5269/1 "2024-12-19T10:05:36Z")
Hello all. I like to do programs with SFC, but in B&R it is very difficult. Do anyone do programming in SFC? I have some trouble: 1. When I do search for the variable in SFC logic AS (4.12.5) goes to crash each time. 2. When I try to follow diagram online and if I go into sub branch and return back all is frozen. I have to go offline- online again to see live information. 3. A lot of times I can’t delete or move steps together with transition. 4. and a lot of small things which are making work with SFC uncomfortable. So , do you have some same experience? ---
**Author:** ![valerio.manenti](https://dub1.discourse-cdn.com/brcommunity/user_avatar/community.br-automation.com/valerio.manenti/32/11712_2.png) [@valerio.manenti](https://community.br-automation.com/u/valerio.manenti)\ **Post date:** [December 19, 2024, 5:29pm UTC](https://community.br-automation.com/t/sfc-programming-in-b-r-as/5269/2 "2024-12-19T17:29:19Z")
No I don’t see the issues you have reported in my prj. I’m using AS 4.12.7 AR M4.93 ---
**Author:** ![kovarj](https://dub1.discourse-cdn.com/brcommunity/user_avatar/community.br-automation.com/kovarj/32/537_2.png) [@kovarj](https://community.br-automation.com/u/kovarj)\ **Post date:** [December 19, 2024, 8:51pm UTC](https://community.br-automation.com/t/sfc-programming-in-b-r-as/5269/3 "2024-12-19T20:51:00Z")
OK Sergei can you update to the latest version of AS? And let us know if it helped you? ---
**Author:** ![Sergei\_Novik](https://avatars.discourse-cdn.com/v4/letter/s/FF8800/32.png) [@Sergei\_Novik](https://community.br-automation.com/u/Sergei_Novik)\ **Post date:** [January 3, 2025, 12:41pm UTC](https://community.br-automation.com/t/sfc-programming-in-b-r-as/5269/4 "2025-01-03T12:41:49Z")
Hello Valerio, I’m using A4.83 version of Runtime. Should It better to upgrade to M4.93? What is first letter A or M mean in regards to AR version? ---
**Author:** ![Sergei\_Novik](https://avatars.discourse-cdn.com/v4/letter/s/FF8800/32.png) [@Sergei\_Novik](https://community.br-automation.com/u/Sergei_Novik)\ **Post date:** [January 3, 2025, 12:44pm UTC](https://community.br-automation.com/t/sfc-programming-in-b-r-as/5269/5 "2025-01-03T12:44:40Z")
Hello Jaroslav. I did try AS6 and it seams like improvement done in this version. Now can search inside .sfc files without crash of AS. But I still have sometimes crashes if I’m online monitor SFC logic. ---
**Author:** ![kovarj](https://dub1.discourse-cdn.com/brcommunity/user_avatar/community.br-automation.com/kovarj/32/537_2.png) [@kovarj](https://community.br-automation.com/u/kovarj)\ **Post date:** [January 3, 2025, 12:53pm UTC](https://community.br-automation.com/t/sfc-programming-in-b-r-as/5269/6 "2025-01-03T12:53:38Z")
I’m happy that you have observed improvement, so you are able to monitor SFC logic. If the problem is not 100% fixed, it might be worth contacting your local B&R office support. ---
**Author:** ![valerio.manenti](https://dub1.discourse-cdn.com/brcommunity/user_avatar/community.br-automation.com/valerio.manenti/32/11712_2.png) [@valerio.manenti](https://community.br-automation.com/u/valerio.manenti)\ **Post date:** [January 7, 2025, 10:45pm UTC](https://community.br-automation.com/t/sfc-programming-in-b-r-as/5269/7 "2025-01-07T22:45:14Z")
Hi Sergei, in the help you see more details regarding AR letter and numbers [Runtime overview](https://help.br-automation.com/#/en/4/automationruntime%2Fgeneral%2Fruntimeoverview.html) ---
**Author:** ![Sergei\_Novik](https://avatars.discourse-cdn.com/v4/letter/s/FF8800/32.png) [@Sergei\_Novik](https://community.br-automation.com/u/Sergei_Novik)\ **Post date:** [January 8, 2025, 8:01am UTC](https://community.br-automation.com/t/sfc-programming-in-b-r-as/5269/8 "2025-01-08T08:01:58Z")
Hello Valerio. Thank you very much for info! ---
**Author:** ![Sergei\_Novik](https://avatars.discourse-cdn.com/v4/letter/s/FF8800/32.png) [@Sergei\_Novik](https://community.br-automation.com/u/Sergei_Novik)\ **Post date:** [January 16, 2025, 9:05am UTC](https://community.br-automation.com/t/sfc-programming-in-b-r-as/5269/9 "2025-01-16T09:05:18Z")
Hello All. Regarding SFC programming I have a problem in 4.12.x Studio that if I make search in files and there are a lot of search result that Studio crashed. Does somebody have the same issue?