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Bit by bit in SCL with Step7 V11

Created by: epbel at: 9/28/2012 11:35 PM (2 Replies)

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9/28/2012 11:35 PM	Rate (0)
epbel Advanced Member Joined: 8/30/2011 Last visit: 9/25/2024 Posts: 12 Rating: (0)	Has anyone been able to make bit by bit addressing work in SCL for an S7-1200 v2.2 and Step7 V11 SP2 UPD4 I can make it work for LAD but not for SCL. In SCL only local variables will work. In the attached file the addresses are identical. Attachment bit by bit.jpg (429 Downloads)

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9/30/2012 1:43 PM	Rate (0)
jklm Platinum Member Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (308)	Hello, You could simply copy your "optimized block".word1 into a "tempword" like this: tempword:="optimized block".word1; And access tempword.x15 Another tip may be: In S7-SCL you can use the AT command to define other views of the declared variables. An example can be foud in this FAQ: http://support.automation.siemens.com/WW/view/en/22111672 In FB40 individual bits of a byte are accessed using that trick.
	Best regards jklm Suggestion was helpful? Feel free to rate it.
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10/1/2012 2:41 AM	Rate (0)
epbel Advanced Member Joined: 8/30/2011 Last visit: 9/25/2024 Posts: 12 Rating: (0)	Yes, the workaround I've been using is copying to local stack but it would be nice if the manual was correct. I assume you confirmed that it doesn't work for you either...? Thanks!

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