Hello,
This is the first time I post here althought I´ve been reading your comments for a while and they have helped me to solve some problems I´ve encountered using the PI-System, so first of all thanks for the help.
My current problem is that I want PI-ACE to write a value for a tag at a specific time in the past. I´ve read the manuals and they say that if you use the formula tag.value(timestamp) = x, the tag will have the value x for the timestamp specified but I´ve been having lots of problems. According to the manuals, the timestamp can have different formats: a date, a string with the format mm-dd-yyyy hh:mm, an UTC date , but I´ve been testing the different options and depending on which one you use the system does different things (the system doesn´t write anything at all, the system writes the value at the current time and not at the date specified, the system overwrites all the data before the date specified, the system overwrites all the data after the date specfied..), but none of them is the one that I need. It´s very important than the data is written in the specified time and doesn´t overwrite anything before or after.
I don´t know how to solve it so if anyone could help me I would be very grateful.
Thanks in advanced
