Summary of errors in SIEMENS WINCC V7

I. Server not available, Cannot connect to server

1: Check whether SQL status is running or not in SQLServermanager

2:Check the user in Group HMI

Let’s go to Computer Management – Local Users and Groups – Groups: Groups SIMATIC HMI, SIMATIC HMI CS, SIMATIC HMI VIEWER must have users on your computer! My example has an additional user declared in SIMATIC HMI

3: Restart your computer and get results!

In case it still doesn’t work, you should check whether your project directory has a database or not! For example, the image below has a database.

II.Access to the project is currently not allowed wincc

– Check in the project folder for a file named “ProjectOpened.lck”, delete it and reopen the project as usual!

III.Missing S7Online Access point in Set PG/PC interface

In case you lose your Access Point, please redownload and install “PC_IDENTIFIER”. This error will be resolved in both PC/PG and WINCC

Link “PC_IDENTIFIER_09.03.03.00_01.04.00.03“

IV.Connection status unknown hoặc disconnected

-With this error, we download and install SIMATIC NET V17 for V7.5, which will fix the connected and unknown status errors.

Link : SIMATIC NET V17

Kết nối OPC DA C# và KepwareV6 HOANLK