Passing Variables Between Pages
I want to create a page for adjusting instrument values e.g. enable/disable/min/max/alarm/trip values - potentially about 12 values for each instrument, I have about a 100 instruments. The screen is accessed by pressing the appropriate button on a P&ID style overview page(s).
I've done this previously using Allen Bradley with a single template style screen and then passing tag data via parameter files (there's other ways of doing it but that's another issue). I thought I would be able to do something similar with ABB using variables but for some reason can't seem to write to variables. I've used the obvious action - WriteTag but it seems to do nothing. I've tried adding a tag in the tag editor or using the variables widget. Neither works. So how do you write to internal tags/variables if it's not the WriteTag action? The SetBit action seems to work for booleans but I can't write to numeric or string values.
I'm an ABB PanelBuilder novice who should have done training but unfortunately got dropped in it and needs to get a panel working in a few days, no time for a course... I'm sure we've all been in similar situations!
If this doesn't work I'll have to create a table for all instruments but it's not a great solution. I'd rather have a page for each but not have to create 100 specific pages for each instrument.
NB: Only on simulator at the moment, if this makes any difference..
I've done this previously using Allen Bradley with a single template style screen and then passing tag data via parameter files (there's other ways of doing it but that's another issue). I thought I would be able to do something similar with ABB using variables but for some reason can't seem to write to variables. I've used the obvious action - WriteTag but it seems to do nothing. I've tried adding a tag in the tag editor or using the variables widget. Neither works. So how do you write to internal tags/variables if it's not the WriteTag action? The SetBit action seems to work for booleans but I can't write to numeric or string values.
I'm an ABB PanelBuilder novice who should have done training but unfortunately got dropped in it and needs to get a panel working in a few days, no time for a course... I'm sure we've all been in similar situations!
If this doesn't work I'll have to create a table for all instruments but it's not a great solution. I'd rather have a page for each but not have to create 100 specific pages for each instrument.
NB: Only on simulator at the moment, if this makes any difference..
Asked 2 years ago
Answers
0
Look in the help for indexed addressing you can create a single screen and select wich instruments data is going to be displayed.
Answered 2 years ago
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