FactoryTalk View SE Display w/ TagParameters & VBA

mgallgood · Feb 10, 2017

I'm trying to find the proper way to use the Tag Parameters assigned to a graphic display in FactoryTalk View SE when attempting to access them in VBA code. I am currently have a line of code similar to:
MyString = Me.TagParameters(1)
The tag assigned to the tag parameter is a string type Memory tag.
What I get when I do this is the Tag Name, not the value of the tag.

What am I doing wrong? Any help would be appreciated!

Mike

rdrast · Feb 11, 2017

What "Parameters" are you actually looking for?

mgallgood · Feb 11, 2017

In the configuration for the action of the button that opens the screen I have set the check box for "Tag Parameters" and picked a tag from the Tag Browser. That is the "TagParameter" I am referring to.

rdrast · Feb 11, 2017

I really have almost no idea what you are talking about.

In VBA, you read a tags value by making a tag group, adding the tags, activating the group, and then just reading oMyDimmedTag.Value

For the display open command, the "Parameter Tags" are simple substitutions to placeholders on the display. Exactly like using a Parameter file.

If you combine them, and want a parameterized tag value from VBA, you have to first get it's actual tagname, create a tag object, then add it to a tag group, then activate the group, and read its .Value

Welcome to the FTView experience. Everything is made about 20 times harder to do than in any other software out there. And at 20 times the cost.

jkerekes · Feb 11, 2017

There is a way to get the tag parameters that were passed to a screen in VBA. I've done this. But I'm confused by your question though.

ASF · Feb 12, 2017

mgallgood said:
I'm trying to find the proper way to use the Tag Parameters assigned to a graphic display in FactoryTalk View SE when attempting to access them in VBA code. I am currently have a line of code similar to:
MyString = Me.TagParameters(1)
The tag assigned to the tag parameter is a string type Memory tag.
What I get when I do this is the Tag Name, not the value of the tag.

What am I doing wrong? Any help would be appreciated!

Mike

Try MyString = Me.TagParameters(1).Value

Can't guarantee it'll work - it's just a semi-educated guess - but everywhere else you use a tag you have to specify that you want the tag value, so I'd imagine you have to specify the same thing here.

mgallgood · Feb 13, 2017

OK, I was not where I could get screen caps before but I am now.
This is what I am referring to for those who don't know.

I did try the MyString = Me.TagParameters(1).Value statement. This gives me a "VBA Code has been halted. Reason: Compile error - Invalid qualifier" error.

Thanks.

mgallgood · Feb 13, 2017

FYI.
Well, the image object breaks in the post (at least it does for me).
If I right click the image icon and select open in new tab it displays the image.

jkerekes · Feb 13, 2017

Some code I did, slightly simplified, under Sub Display_AnimationStart():

Dim ParamList As StringList
Dim TopicName As String
Dim TagName As String
Dim ReqSecurityCode As String

Set ParamList = Me.TagParameters

TopicName = ParamList.Item(1)
TagName = ParamList.Item(2)
ReqSecurityCode = ParamList.Item(3)

mgallgood · Feb 13, 2017

Thanks John.
That would definitely make the code more readable for me, especially if there were multiple tags being passed to the screen.

In my case, for now, I only need to pass a single parameter in order to allow the logic to decide what tables/values are being queried from the DB (so I can limit the number of screens and amount of logic I have to create.

That said, if anyone has a better idea for doing this than using a Memory Tag to facilitate this functionality I'm all ears!

Thanks!

mgallgood · Feb 13, 2017

Another update.
I did apply the Tag Group concept to my code and it works fine.
I'm starting to get a better and better sense of why so many people here and elsewhere berate this (and other RS) product(s)! WOW.
:|

Tanquen · Oct 28, 2018

Any way to get at the TagParameters of a global object in VBA?

I've used Me.TagParameters(1) to get the first one passed to a screen.

I guess you have to use the parameter in like a hidden text objects caption inside the global object to get into VBA?

Oops:

http://www.plctalk.net/qanda/showthread.php?t=71777&highlight=VBA+parameters

FactoryTalk View SE Display w/ TagParameters & VBA

mgallgood

Member

rdrast

Lifetime Supporting Member

mgallgood

Member

rdrast

Lifetime Supporting Member

jkerekes

Member

ASF

Lifetime Supporting Member

mgallgood

Member

mgallgood

Member

jkerekes

Member

mgallgood

Member

mgallgood

Member

Tanquen

Member

Similar Topics