12/14/2023 8:18 AM | |
Joined: 5/6/2022 Last visit: 4/26/2024 Posts: 412 Rating: (81) |
Hi Roby, In these cases there are a number of questions that can be very helpful to be able to see what may be going wrong: - What is the exact version and reference of the PLC and HMI? - Is it a direct connection or does it go through some intermediate element, such as a router? - Does the date and time set in PLC and HMI match? - Within the PLC properties, is any password protection against HMI access configured? If so, has this password been configured in the "HMI connection" for the panel to access? - In the PLC variables table, are the variables shared with the HMI marked "Accessible from HMI/OPC" and "Writable from HMI/OPC"? I also share with you some FAQs that you can review, in case of certificate issues as you comment for example: "No connection to PLC after WinCC Panel Images V17 Update 6". Best regards! |
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