Hi Robert, We will test this topology and provide an update soon to confirm whether this issue is observed in our setup. Could you provide answers to the following questions to better understand the issue? 1) Which Industrial Communications SDK version are you using? 2) [quote userid="502972" url="~/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1500025/mcu-plus-sdk-am243x-sporadic-telegram-gaps-on-profinet-when-used-reversed"]This "reversed" connection has sporadic loss of telegrams[/quote] What type frames are lost in this topology? Is it just the PROFINET IO frames? 3) Could you share a wireshark capture? Is the cycle counter content in the packet not incrementing uniformly? Are all frames received but just not in correct order? Regards, Laxman
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