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Change "Global area pointer of HMI device> screen number" to symbolic address instead of absolute

Created by: AutoGen_1046295 at: 2/17/2016 9:48 PM (5 Replies)

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2/17/2016 9:48 PM	Rate (0)
AutoGen_1046295 Posts: 1 Rating: (0)	Hey guys. Im fairly new to TIA and have a question. I want to change "Connections>Area Pointer>Global area pointer of HMI device> screen number" to symbolic address instead of absolute. Its an internal tag with no PLC connection. I cant find a drop down option or anything to change it. Thoughts? ------------------------------------------------------------------------------------------ Split from Global area pointer DT/Job Mailbox DT.
AutoGen_1046295 Posts: 1 Rating: (0)	Last edited by: Min_Moderator at: 2/18/2016 4:15:09 PM New subject after splitting
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2/19/2016 10:15 AM	Rate (0)
Murof Platinum Expert Joined: 8/3/2009 Last visit: 1/9/2026 Posts: 16629 Rating: (1944)	Hello First of all you use the Area Pointer in a Connection to PLC so Areas Pointers are Data Areas to Exchange Information with PLC. -> So you cannot use an Internal Tag for Area Pointer Screen Number!!! If you choose Symbolic you have to use A PLC Tag-Object or you choose Absolute then you need a PLC Tag Address. But you can use that Area Pointer also as a normal HMI Tag. So the Panel sends the Screennumber to PLC DB and you read it out over HMI Tag. But using only an internal Tag in HMI for Area Pointer is not possible. Bye Murof
	If this Information really helps, you could use the Rate function
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6/20/2016 11:11 AM	Rate (0)
idop Posts: 10 Rating: (2)	hello i want to configure the screen number so i will be able to use the current page of the hmi in the plc program. i triyed to put a db adress with arrey of 5 words in the erea pointer tab but it didnt work. can someone tell me step by step what to do? thanks ido.
idop Posts: 10 Rating: (2)
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6/21/2016 2:42 PM	Rate (0)
Prof. Frink Platinum Expert Joined: 7/5/2013 Last visit: 1/12/2026 Posts: 3274 Rating: (526)	Hello idop, try datatype INT not WORD. Regards, Frink
	Pi is exactly three! All you have to do is think of things which people need but which don’t exist yet.
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5/7/2018 10:03 AM	Rate (0)
Jen_Moderator Posts: 8171 Rating: (174)	New question published by Shubham_panghate is split to a separate thread with the subject What is field number when assign job mailbox to change screen?. Best regards Jen_Moderator
Jen_Moderator Posts: 8171 Rating: (174)
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8/14/2019 9:03 PM	Rate (0)
VMOPURU Advanced Member Joined: 3/21/2017 Last visit: 7/30/2025 Posts: 14 Rating: (0)	If you want to change the active screen from PLC then use the area pointer "Job Mailbox". This uses the PLC variable type is "Array[0..3] of Word. JobMailBox[0] := 51; //command JobMailBox[1] := #ScreenNoRequest //Screen number request to activate JobMailBox[2] := 0; JobMailBox[3] := 1; If you want to read the active scree no. there are many ways. Below is using the area pointer at "Connections -> Global area pointer of HMI Device -> Screen Number" Select the HMI connection and PLC variable type and type is "Array[0..4]". Good luck

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