1, the trend of intouch is to create its own historical file, which can be run without a database, and the storage path of this historical data can be configured.

2. When creating variables, check Save Data, add two historical trend controls, one is to display the curve, and the other is to control the curve, and then associate the variables that want to display the curve in the pen. For more information, see the help.

How to establish historical documents? Write your own data on it?

When creating variables, check the recorded data, which intouch will automatically save.

The following is a description of the help file:

InTouch HMI creates two log files.

The file contains recorded data stored in a proprietary format.

Another file is the index of these data.

The names of these two log files are specified in the following format:

YYMMDD00。 LGH and YYMMDD00. IDX”