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Properties - IOField - Output value

Created by: GrahamBS at: 6/25/2007 10:47 PM (10 Replies)

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6/25/2007 10:47 PM	Rate (0)
GrahamBS Posts: 14 Rating: (0)	Help please, Say I have two tags..Tag1 and Tag2 Is it possible to change the Properties - IOField - Output Value dependent which Tag I am using. If so could you please advise what is the best way to perform this action. Regards
GrahamBS Posts: 14 Rating: (0)
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6/26/2007 9:00 AM	Rate (0)
Ikkezelf Posts: 1084 Rating: (72)	Hi, It is not completely clear to me what you mean by "using" the tag, but you could connect a c-script to the output value. That c-script can be triggered with a tag trigger to which you connect both tags. Within the c-script you check both tags and act accordingly. with regards, Ikkezelf
Ikkezelf Posts: 1084 Rating: (72)
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6/26/2007 9:54 AM	Rate (0)
GrahamBS Posts: 14 Rating: (0)	I hope this makes it clearer. Tag1-------> Tag2-------> Output Value = (either Tag1 or Tag2) dependant on event. Regards,
GrahamBS Posts: 14 Rating: (0)
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6/26/2007 10:52 AM	Rate (0)
Ikkezelf Posts: 1084 Rating: (72)	You want the output to be the value of the tag that has changed last?
Ikkezelf Posts: 1084 Rating: (72)
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6/26/2007 11:04 AM	Rate (0)
GrahamBS Posts: 14 Rating: (0)	I have one IOFIield smart object in a screen, and I want to diplay the tag value(either Tag1 or Tag2 lets say for instant two recipe values Tag1 or Tag2) Cheers
GrahamBS Posts: 14 Rating: (0)
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6/26/2007 12:53 PM	Rate (0)
April Posts: 1776 Rating: (95)	Hi, as Ikkezelf mentioned above You can do this with a C action. Use both variables as trigger.
April Posts: 1776 Rating: (95)
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6/26/2007 2:46 PM	Rate (0)
Danielle Posts: 1275 Rating: (123)	Hi, As the guys said, you just gotta make the output value property dynamic, with a script which will set the tag to be displayed.
Danielle Posts: 1275 Rating: (123)
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6/26/2007 3:27 PM	Rate (0)
Ikkezelf Posts: 1084 Rating: (72)	You could use a extern variable in the c-script in which you store the last read value of both tags. whenever the ascript is then triggered by one (or both) of the tags you can compare the values with the stored values to see which of the two has changed. And then use that one as output. with regards, Ikkezelf
Ikkezelf Posts: 1084 Rating: (72)
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1/4/2008 8:05 AM	Rate (0)
Skata Experienced Member Joined: 12/18/2006 Last visit: 8/31/2023 Posts: 89 Rating: (6)	Ikkezelf You want the output to be the value of the tag that has changed last? Q1: Is this possible? Two tags and output value is the last to change of the two. Q2: Is it possible to get the tag name of a output value in an I/O-field via script?

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1/7/2008 6:06 PM	Rate (0)
Danielle Posts: 1275 Rating: (123)	Hi, Q1: Is this possible? Two tags and output value is the last to change of the two. --> If your tags won't change simmultaneuously you can have a script with 2 tag triggers, with an upon change cycle. You'd have to store both tag's last values, to check which was the one to actually trigger the script (I can't really think of another way to check which was the last one to change). Then you'd compare each tag to their last values and, once you figure out which one has changed, you can choose which tag will be output. Q2: Is it possible to get the tag name of a output value in an I/O-field via script? --> Since a script will determine the name of the tag to be output, you can tell which tag it is. Best regards, Danielle
Danielle Posts: 1275 Rating: (123)
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