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Extract bit from word for a huge number of words

Created by: Palestine at: 10/6/2009 3:59 PM (22 Replies)

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10/11/2009 12:23 PM	Rate (0)
Palestine Posts: 74 Rating: (0)	Hello fritz thank you for the explanation the FC is working like magic it is really exactly what i need andI've started usingit, but i found that i need also a vice functionbecause i have a Digital output words from a 16 bit for each word, so i am trying toreverseyour function, i hope you can help me with that too. best regards
Palestine Posts: 74 Rating: (0)
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10/12/2009 9:13 AM	Rate (2)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 10/1/2023 Posts: 2989 Rating: (1034)	Thanks for the feedback Palestine, I'm glad it does what you want it to do. I'm sure by now you would have yourself "reversed" the "Word to Bits" Function into a "Bits to Word' Function, but just in case you haven't you'll find my "idea" in form of FC8 in the attached library (which also has the previously posted FC7 in it). As a return "favour" can you please let me know if the previosuly sent FC7does now work with(my preferred) AR1 based logic (it really must). Attachment Bits&Words.zip (891 Downloads)
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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This contribution was helpful to 4 thankful Users Andruxa Palestine Deut Sandeep Bakoliya

10/12/2009 1:31 PM	Rate (0)
Palestine Posts: 74 Rating: (0)	Hello fritz About FC7 and FC8 they are working very will withAR1 based logic and the alternative option also. i don't know whathappenedwith me at the first time, but i am sure it's something wrong i did (sorry). thank you for these FC's there are reallyhelpful. Best regards
Palestine Posts: 74 Rating: (0)
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This contribution was helpful to 1 thankful Users fritz

10/31/2009 4:40 PM	Rate (0)
LostPatrol Posts: 32 Rating: (0)	How do I install these bitfromword function block? TIA! LP
LostPatrol Posts: 32 Rating: (0)
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1/17/2011 10:42 AM	Rate (0)
Denilson Pegaia Platinum Member Joined: 9/23/2005 Last visit: 9/29/2023 Posts: 4241 Rating: (1366)	Hi, take a look also in the FAQ "How can you group separate signals (variables of the "Bool" data type) to one variable of the "Word" type and again extract them from that "Word" variable (Bool - Word data type conversion)?" http://support.automation.siemens.com/WW/view/en/41512046
	Denilson Pegaia Siemens Industry Sector Technical Support
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1/31/2012 5:56 AM	Rate (0)
Chester_F Posts: 4 Rating: (0)	Hi fritz, thanks for these 2 functions. Though I've got a similar problem here...I want the same function, except that I want to extract bit from a DWORD instead of word, and I want to put 32 bits into a DWORD. I've simply tried changing the code you've given, L #DWORD_IN LAR1 P##Bits T D [AR1,P#0.0] but it won't work. Is there any difference in addressing between 16bit and 32bit? Thanks a lot.
Chester_F Posts: 4 Rating: (0)
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1/31/2012 6:37 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 10/1/2023 Posts: 2989 Rating: (1034)	Hello Chester_F no, there is no difference in addressing between 16bit and 32bit in this case and each FCcanbe easily modifed to cater for DWORD usage. I wonder though if you made sure to add another 16 bits to the TEMP variable declaration? I hope this helps
	Last edited by: fritz at: 1/31/2012 6:46 AM typos Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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1/31/2012 7:02 AM	Rate (0)
Chester_F Posts: 4 Rating: (0)	Hi frintz, thanks for replying. I've added those temp variables. And now here is what bothers me: if I use "T D [AR1,P#0.0]", then the function won't work at all. If i use "T W [AR1,P#0.0]", then bit0 to bit15 could be extracted correctly, but bit16 to bit31 are not so lucky... Thanks again.
Chester_F Posts: 4 Rating: (0)
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1/31/2012 7:46 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 10/1/2023 Posts: 2989 Rating: (1034)	Hello Chester_F can you upload your program/block here for evaluation (otherwise I'd need a crystal ball to work out what's wrong )?
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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1/31/2012 8:33 AM	Rate (0)
Chester_F Posts: 4 Rating: (0)	Oops, sorry about that~ Here is the program in the attachment. Attachment DWord2bits.zip (569 Downloads)
Chester_F Posts: 4 Rating: (0)
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