1/15/2020 10:32 AM | |
Joined: 4/14/2017 Last visit: 8/2/2023 Posts: 32 Rating: (0) |
I have a wincc explorer 7.3 projects. All is ok, except that historic trends remain only for 7 days, how can I increase the historic trend data time for 6 months
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Last edited by: CS Moderator at: 01/15/2020 13:27:37New subject after splitting |
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1/17/2020 8:22 AM | |
Joined: 4/14/2017 Last visit: 8/2/2023 Posts: 32 Rating: (0) |
very help full, pl clear me the following point in my example pics. one analog tag with logging of 500ms(two times log in one sec). 1) In pic1 I have set Time period for single segment is 2 hrs and Time period of all segment is 4rs. According to my understanding, I should get the trend for 4 hours but I am getting for more than 6 hrs. How?? 2) In pic2 there written 3KB/TAG, That means 3kb space will be covered by each log?(i.e every 500ms will occopy 3KB space? 3) Last one is, in attached formula pic, where from that 16 byte came from? I have understand the remaining formula but how can I define that 16byte, according to me that size is 3KB per tag(or per logging value) and that is un editable. Attachmentpics.zip (146 Downloads) |
1/17/2020 8:24 AM | |
Joined: 4/14/2017 Last visit: 8/2/2023 Posts: 32 Rating: (0) |
very help full, pl clear me the following point in my example pics. one analog tag with logging of 500ms(two times log in one sec). 1) In pic1 I have set Time period for single segment is 2 hrs and Time period of all segment is 4rs. According to my understanding, I should get the trend for 4 hours but I am getting for more than 6 hrs. How?? 2) In pic2 there written 3KB/TAG, That means 3kb space will be covered by each log?(i.e every 500ms will occopy 3KB space? 3) Last one is, in attached formula pic, where from that 16 byte came from? I have understand the remaining formula but how can I define that 16byte, according to me that size is 3KB per tag(or per logging value) and that is un editable.
Attachmentpics.zip (145 Downloads) |
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