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Blocks without connection to an output

Created by: smf at: 10/29/2009 3:06 PM (5 Replies)

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10/29/2009 3:06 PM	Rate (0)
smf Experienced Member Joined: 5/18/2007 Last visit: 11/20/2025 Posts: 25 Rating: (0)	Hi I'm building my first program with Logo atm and was pretty much finished with my program and it seemed to work okey in simulation mode. But when i tried to download it to the logo it failed and i got this message in the info window: "Blocks without connection to an output: B003 [Analog Amplifier] B004 Larm 1 [Message texts] B005 larm2 [Message texts] Download PC --> LOGO! failed" What am i doing wrong? i cant figure out what i'm supposed to do. I'm ataching a screengrab that shows how i'm doing it. I'm using LOGO! soft comfort V6.1.12 btw Attachment logofel.jpg (1341 Downloads)

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This contribution was helpful to 1 thankful Users Tomaszki

10/29/2009 10:30 PM	Rate (1)
E-MAT Posts: 11 Rating: (1)	Hello: This is my first answer on this forum, then I hope don´t do a bad answer. Try to make three open contacts of the problem blocksand connect it with an open output (X1, X2 ...). Try then to d/l to Logo!. Hope this solve your problem. Regards.
E-MAT Posts: 11 Rating: (1)
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10/30/2009 8:40 AM	Rate (0)
smf Experienced Member Joined: 5/18/2007 Last visit: 11/20/2025 Posts: 25 Rating: (0)	Hey Great first post! I dont know why i need to use these open contacts/outputs but i'm using them now and everything is fine Thanks.
	Last edited by: smf at: 10/30/2009 8:41 AM Last edited by: smf at: 10/30/2009 8:41 AM
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11/5/2009 5:58 AM	Rate (2)
LOGO!Barbarian Posts: 173 Rating: (95)	Hi all - I have not posted for a while, so I am a bit rusty! I finally found out why we have to use these open connectors all the time !!! Every LOGO! function block has got a single output (obvioulsy not flags or markers) and the way that the LOGO! executes the program in Java means that every output must go somewhere. Many people forget to 'terminate' a message text if they are not passing through the signal. It is a bit trickier to use these open connectors in the LAD editor - make a simple program in FBD and then convert to LAD to see how it is done. If you run out of open connectors, then here is a trick Use 1 Open connector and use an OR or a cascade of OR's to connect all the functions (like message texts x50) that need terminating. Also for when you need analog markers - use a Threshold trigger to terminate an analog value into a digital output - then put them into the OPEN CONNECTOR - OR gate cascade mentioned above. Hide this bit of code off to the side of your program and cut all the link lines to it and your program looks neat and tidy again. PS. You only get this error message on downloading to hardware - the code will run fine in simulation - this often frustrates people! Hope this helps! Aaaarrrggghh!!! ("Have a nice day!")
LOGO!Barbarian Posts: 173 Rating: (95)
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This contribution was helpful to 1 thankful Users AutoGen_616603

11/6/2009 1:35 PM	Rate (1)
Andres [Str] Posts: 153 Rating: (18)	hi, I make the correct in pictures Attachment logocorrect.zip (1864 Downloads)
Andres [Str] Posts: 153 Rating: (18)
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This contribution was helpful to 3 thankful Users major2141 MDEVHA AutoGen_616603

6/14/2024 2:29 PM	Rate (0)
jpstaden Member Joined: 9/22/2021 Last visit: 7/5/2024 Posts: 1 Rating: (0)	It work Thanks

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