System initiated session termination

Hi everybody!

I am working with a unified comfort panel MTP1500 and a CPU 1515TF-2PN. HMI and PLC have been communicating correctly and after a starting the session and turning on the equipment, communication is lost and the "system initiated session termination" event appears in the PLC. This event arises every 20 sec.

It seems that it is a security problem or unauthorized access,. If the HMI simulation is started in the PC runtime, the communication is correct. Any ideas?

PLC IP:10.8.7.100

HMI IP: 10.8.7.101

Hi,

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