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Variant pointer S7-1200

Created by: Marko Bursic at: 4/21/2013 11:28 AM (8 Replies)

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4/21/2013 11:28 AM	Rate (0)
Marko Bursic Platinum Member Joined: 9/8/2009 Last visit: 7/17/2023 Posts: 1410 Rating: (154)	Hi, What is a purpose of variant pointer? Has someone succeded to make a function with a variant input and variant output, and that makes something with those two pointers?

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4/22/2013 1:22 PM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 1/24/2025 Posts: 4397 Rating: (1464)	Hi, Variant variables are used in library blocks. They gives some more "liberty" to connect to differensts data types. Unhapply a user block could just "forward" these variables from/to lib blocks. If you need to use sometihng more"open" in your user block, you need to use ANY data type.
	Denilson Pegaia Siemens Industry Sector Technical Support
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4/22/2013 7:34 PM	Rate (0)
Marko Bursic Platinum Member Joined: 9/8/2009 Last visit: 7/17/2023 Posts: 1410 Rating: (154)	I can't find ANY pointer in S7-1200

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5/22/2013 4:22 PM	Rate (0)
KM_AS Silver Expert Joined: 11/23/2011 Last visit: 1/22/2025 Posts: 202 Rating: (32)	Hello Marko Bursic, Ican't help you with the any pointers. But here is an interesting link for the data type "variant" for S7-1200 in TIA Portal: http://support.automation.siemens.com/WW/view/de/42603286 Maybe it would be helpful. Best Regards!

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5/22/2013 5:39 PM	Rate (0)
Marko Bursic Platinum Member Joined: 9/8/2009 Last visit: 7/17/2023 Posts: 1410 Rating: (154)	Thanks, but is reserved only for built in functions, no custom FC, FB can use variant.

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5/27/2013 1:50 PM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 1/24/2025 Posts: 4397 Rating: (1464)	Hi, what do intend to do? Maybe you could create, by your self, a UDT, with the data that you need, and internally to use, for example, peek / poke instructions to solve your task.
	Denilson Pegaia Siemens Industry Sector Technical Support
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3/6/2014 1:09 AM	Rate (0)
Roberto Fonte Experienced Member Joined: 3/9/2012 Last visit: 3/7/2022 Posts: 19 Rating: (0)	HI , i have exactly the same problem . I this Siemens example it is possible . https://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=de&objid=42603286&caller=view Attachment example_pointer.JPG (1379 Downloads)

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3/7/2014 11:07 AM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 1/24/2025 Posts: 4397 Rating: (1464)	Hi, now, in STEP7 V13,is possibleto get some informations about Variant pointers inside of the block.
	Denilson Pegaia Siemens Industry Sector Technical Support
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5/27/2014 2:45 PM	Rate (0)
O_Moderator Diamond Member Joined: 4/24/2009 Last visit: 8/20/2024 Posts: 2682 Rating: (135)	New question splitted to How use Variant type in FC function?. Best regards O_Moderator
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