# How to change date and time of a X20CP3686X? **URL:** \ **Category:** B&R Software & Runtime\ **Tags:** automation-runtime, plc\ **Created:** [October 8, 2025, 2:53pm UTC](https://community.br-automation.com/t/how-to-change-date-and-time-of-a-x20cp3686x/8629 "2025-10-08T14:53:55Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Snide21](https://avatars.discourse-cdn.com/v4/letter/s/FF8800/32.png) [@Snide21](https://community.br-automation.com/u/Snide21)\ **Post date:** [October 8, 2025, 2:53pm UTC](https://community.br-automation.com/t/how-to-change-date-and-time-of-a-x20cp3686x/8629/1 "2025-10-08T14:53:55Z")
Hi, I don’t understand how to set the date and time of my CPU. I tried by using the option Online→Info→date/time but it says I can’t and should look into the Help. I tried but didn’t find anything. ---
**Author:** ![Matt\_Buck](https://avatars.discourse-cdn.com/v4/letter/m/FF8800/32.png) [@Matt\_Buck](https://community.br-automation.com/u/Matt_Buck)\ **Post date:** [October 8, 2025, 3:03pm UTC](https://community.br-automation.com/t/how-to-change-date-and-time-of-a-x20cp3686x/8629/2 "2025-10-08T15:03:19Z")
You can use the AsTime library. Or use the AsArCfg library to setup/configure NTP Servers. ---
**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:** [October 8, 2025, 4:32pm UTC](https://community.br-automation.com/t/how-to-change-date-and-time-of-a-x20cp3686x/8629/3 "2025-10-08T16:32:00Z")
If NTP time synchronization is enabled (CPU configuration), then you cannot set a time using Online → Info. ---
**Author:** ![Snide21](https://avatars.discourse-cdn.com/v4/letter/s/FF8800/32.png) [@Snide21](https://community.br-automation.com/u/Snide21)\ **Post date:** [October 9, 2025, 7:22am UTC](https://community.br-automation.com/t/how-to-change-date-and-time-of-a-x20cp3686x/8629/4 "2025-10-09T07:22:25Z")
Sadly it it not active. This is what I see when I try to set it manually: ![image](https://europe1.discourse-cdn.com/brcommunity/original/2X/1/12d332637dc14d6b2be6249a5cf1eb0ed75aa2fb.png) I will try with the AsTimeLibrary, although I was curious to understand why I cant manually. If I look up “date and time” it says that my search give too many results, even when I deselect everything, so I can’t find any info. ---
**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:** [October 9, 2025, 7:55am UTC](https://community.br-automation.com/t/how-to-change-date-and-time-of-a-x20cp3686x/8629/5 "2025-10-09T07:55:41Z")
just to be sure. I speak about this configuration. Make sure that is also downloaded. ![image](https://europe1.discourse-cdn.com/brcommunity/original/2X/5/58ea7c46bd06d7bb19cf7c56bdd7abdf4c87c775.png) ---
**Author:** ![Snide21](https://avatars.discourse-cdn.com/v4/letter/s/FF8800/32.png) [@Snide21](https://community.br-automation.com/u/Snide21)\ **Post date:** [October 9, 2025, 7:56am UTC](https://community.br-automation.com/t/how-to-change-date-and-time-of-a-x20cp3686x/8629/6 "2025-10-09T07:56:47Z")
Yes, I checked exactly that and it looks like yours ---
**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:** [October 9, 2025, 8:04am UTC](https://community.br-automation.com/t/how-to-change-date-and-time-of-a-x20cp3686x/8629/7 "2025-10-09T08:04:12Z")
what version of AR/AS are you using? ---
**Author:** ![Snide21](https://avatars.discourse-cdn.com/v4/letter/s/FF8800/32.png) [@Snide21](https://community.br-automation.com/u/Snide21)\ **Post date:** [October 9, 2025, 8:19am UTC](https://community.br-automation.com/t/how-to-change-date-and-time-of-a-x20cp3686x/8629/8 "2025-10-09T08:19:09Z")
Here are the versions: AR: H4.9 AS: 4.10.5.38 ---
**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:** [November 24, 2025, 8:21am UTC](https://community.br-automation.com/t/how-to-change-date-and-time-of-a-x20cp3686x/8629/9 "2025-11-24T08:21:36Z")
Hi @Snide21 ,have you solved your topic, can you update us?