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System initiated session termination

12/10/2021 12:53 PM	Rate (0)
AutoGen_523656 Member Joined: 4/28/2015 Last visit: 3/19/2025 Posts: 1 Rating: (0)	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 Attachment System initiated session termination.png (1200 Downloads)

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12/10/2021 6:08 PM	Rate (0)
itafusna Silver Expert Joined: 2/17/2020 Last visit: 8/29/2025 Posts: 1251 Rating: (237)	Hi, Please try to follow the following FAQ.
	A rating will be well appreciated.
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This contribution was helpful to 3 thankful Users Anh1988 NICKNO igor.moura

6/13/2025 7:38 AM	Rate (0)
PetBo Member Joined: 7/29/2019 Last visit: 6/23/2025 Posts: 3 Rating: (0)	It happens to me every time. The date on the HMI is not within the validity period of the PLC certificate.

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7/26/2025 6:31 PM	Rate (0)
URI_555 Joined: 4/8/2025 Last visit: 7/26/2025 Posts: 4 Rating: (0)	and, How do I change the date of the HMI?

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7/31/2025 12:41 PM	Rate (0)
Murof Platinum Expert Joined: 8/3/2009 Last visit: 9/10/2025 Posts: 16386 Rating: (1934)	URI_555 and, How do I change the date of the HMI? You can do it manually in the control panel of the HMI or you use a NTP Server connection for time synchronization Bye Murof
	If this Information really helps, you could use the Rate function
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