In the FB interface, add a tag of IEC_Timer datatype to the Static tag section.  Then use that internal FB tag as your timer.  Then each instance of the FB will use a different and unique timer.

Thang Vu

Hi guy

I'm encountering the same error as you I can't use FB many times when that FB contains Timer you can guide me to handle this problem

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Split from Calling a FC or FB with timers inside multiple times.