# XCTU connection timeout

**URL:** <https://forums.digi.com/t/xctu-connection-timeout/22004>\
**Category:** XBee - DigiMesh\
**Tags:** communications-error, 868lp, sx868, digimesh, xbee\
**Created:** [November 19, 2020, 11:52am UTC](https://forums.digi.com/t/xctu-connection-timeout/22004 "2020-11-19T11:52:42Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![lorant124](https://avatars.discourse-cdn.com/v4/letter/l/bb73d2/32.png) [@lorant124](https://forums.digi.com/u/lorant124)\
**Post date:** [November 19, 2020, 11:52am UTC](https://forums.digi.com/t/xctu-connection-timeout/22004/1 "2020-11-19T11:52:42Z")

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Hi,  
I have Xbee S8 (868LP) in my application and I have EVK board and I`m using it with XCTU 6.5.3.  
I tried to configure the module in my application from XCTU.  
I have 3 modules (2x module in my PCB and 1 in EVK board).  
I send digi mesh packets every second.

I try to send digimesh packet from 1.module to 2. module and parallelly I ask for information of 1. module settings with EVK.  
When 2. module is available (is turned on) I get information correctly.  
When 2. module is not available (is turned off) I get message from xctu “Error Reading AT Parameters \> Connection timeout”

After getting the error message I stop sending digimesh messages (I stop in me MCU) …then after few sec the communication between EVK and 1. module start to work properly.

please help.  
Thank you

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**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\
**Post date:** [November 19, 2020, 12:28pm UTC](https://forums.digi.com/t/xctu-connection-timeout/22004/2 "2020-11-19T12:28:20Z")

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You should be using API mode and watch for the status frames. When a packet fails, you should not try to send another one to that radio till the next poll cycle.

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**Author:** ![lorant124](https://avatars.discourse-cdn.com/v4/letter/l/bb73d2/32.png) [@lorant124](https://forums.digi.com/u/lorant124)\
**Post date:** [November 30, 2020, 9:23am UTC](https://forums.digi.com/t/xctu-connection-timeout/22004/3 "2020-11-30T09:23:48Z")

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thank you 🙂