# 750-658 // CanDeviceisLocked

**URL:** <https://www.wago.community/t/750-658-candeviceislocked/1767>\
**Category:** Hardware and Linux\
**Created:** [April 18, 2025, 12:46pm UTC](https://www.wago.community/t/750-658-candeviceislocked/1767 "2025-04-18T12:46:31Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![damienexail](https://avatars.discourse-cdn.com/v4/letter/d/b2d939/32.png) [@damienexail](https://www.wago.community/u/damienexail)\
**Post date:** [April 18, 2025, 12:46pm UTC](https://www.wago.community/t/750-658-candeviceislocked/1767/1 "2025-04-18T12:46:31Z")

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Hello,  
I use the card 750-658 with WagoAppCanLayer2 library.  
It is working!  
Sometime, when i power on the PLC, the communication doesn’t work. I have the message of FbCANL2OPEN with diReturn “CanDeviceUsLocked”.  
I use FbCANL2CLOSE or FbCANL2RESET without results ☹  
I need to reboot PLC to restart communication.

Do u have idea?