I have a question considering HMI data logging and I am sorry in advance that it is about festo CDPX-X-A-W-7 hmi panel and festo software designer studio 1.90. I have realised trends for the tags of interest. The major problem is that the values of tags are logged onto sd card only when the page of the tag is active. So, when the main screen is active none of the tag values are recorded. I am really puzzled about this. Is this maybe a normal behaviour of some hmi panels? I find it quite dubious if that would be the case. Thx in advance to all potential helpers.
