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I have issue with my MTP1500 Siemens Unified HMI. It does not connect to PLC, but when I use
WinCC unified Runtime then it works fine. I noticed that error on the screen says that Certificate is not valid?
Do I need certificate? I tried to add it but that does not change anything.
Using TIA Portal V19
This topic was modified 1 year ago by TomSharp
Posted : 28/02/2024 10:53 am
I think this is an issue with the Current time set on HMI, which may be different from PLC time. Set the HMI time the same as the PLC - HMI connection should work.
This is quite a common issue with Unified panels and new certificate-based connections.
#General certificate error
Spoiler
General certificate error
This post was modified 1 year ago by admin
Posted : 28/02/2024 12:04 pm
