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Using the outputs (6) of the 1212C AC/DC/Rly As simple DQ.0 to DQ.6 (SOLVED)

Created by: Lamboom at: 8/29/2014 10:14 PM (6 Replies)

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8/29/2014 10:14 PM	Rate (0)
Lamboom Posts: 90 Rating: (0)	Tried to answer this in the the S7 1200 manual, and the "Easy Book" .. failed miserably. Wondering if I can use all the (6) 1212C AC/DC/Rly ... "relay" outputs as digital outputs? By Connecting +24 VDC to 1L and 2L .. do we now have an almost normal digital output ??? Also, does this take some special CPU configuration in TIA portal? .. or will it just work magically? Thanks, Regards, Michael
Lamboom Posts: 90 Rating: (0)	Last edited by: Lamboom at: 8/30/2014 4:20 PM Last edited by: Lamboom at: 8/29/2014 10:15 PM
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8/30/2014 8:02 AM	Rate (0)
William_B Posts: 5225 Rating: (1202)	Lamboom Tried to answer this in the the S7 1200 manual, and the "Easy Book" .. failed miserably. Wondering if I can use all the (6) 1212C AC/DC/Rly ... "relay" outputs as digital outputs? By Connecting +24 VDC to 1L and 2L .. do we now have an almost normal digital output ??? Also, does this take some special CPU configuration in TIA portal? .. or will it just work magically? Thanks, Regards, Michael [short answer] Yes.. magically.
William_B Posts: 5225 Rating: (1202)
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8/30/2014 8:21 AM	Rate (1)
William_B Posts: 5225 Rating: (1202)	[long answer] Hi Micheal, Digital inputs/outputs are signals that are ON and OFF. In your case the relay is either ON or OFF.. so yes you can use it as a digital output. It is good that you to ask if DC can be connected. Not all PLC brands allow this. Some relays are special of AC or DC. In your case you are okay. Please see the attached PDF (bottom of page 1 and page 2) for specifications on the relay outputs. Please note on the PDF (Table on page 2): 1. Voltage (AC/DC) 2. Amps for voltage 3. Switching cycles lifetime (minimum) 4. Maximum switching frequency You could even flash a lamp with the output if you want to.. but better to do so at a rate of 1 cycle per second and less. - Q0.0..Q0.3 receive power from 1L (X12) - Q0.4..Q0.5 receive power from 2L (X12) That means that you can also mix AC and DC if you wish to do so. A further note is that you can connect 0Vdc (signal ground / minus) to 1L / 2L if you wanted to. Some devices (especially Asian made motion control) require NPN signalling. NPN signalling is where the device gets 0Vdc for a ON signal and anything else above ca. 5Vdc is OFF. .... As a last note - The PLC is blind for what voltages you connect where. The PLC is only concerned with switching the relays ON or OFF. It is only the electrical connections that makes it capable of switching AC or DC and of various voltage levels. .... I have tried to anticipate what you will need from your question. I hope this is of help to you. Best regards. w Attachment EXTRACT_S71200 FW4 System Manual (201403).pdf (289 Downloads)
William_B Posts: 5225 Rating: (1202)
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This contribution was helpful to 1 thankful Users Lamboom

8/30/2014 4:33 PM	Rate (0)
Lamboom Posts: 90 Rating: (0)	Awesome reply William- The extra info was very helpful too ... always nice to see such concise and well written information .. doesn't leave any need for questions.. I did notice some references to output problems with the 1212C AC/DC/Rly, on the forum ... nothing as useful to my question, as your explanation. Sometimes, for newbies, some manuals assume too much, and "understanding" is not often the result. However, your link was very helpful … following your explanation. FYI, thanks to your help (& Huggy's).. the PLC/HMI is running the LinMot driver/controller beautifully, nicely addressing the Command Table and running wild and wonderful curves. Next step, doing it all over the LAN .... Thanks much again, Regards, Michael
Lamboom Posts: 90 Rating: (0)
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This contribution was helpful to 1 thankful Users Marcjan

8/30/2014 10:10 PM	Rate (0)
William_B Posts: 5225 Rating: (1202)	Lamboom FYI, thanks to your help (& Huggy's).. the PLC/HMI is running the LinMot driver/controller beautifully, nicely addressing the Command Table and running wild and wonderful curves. Next step, doing it all over the LAN l Thanks Micheal for the feedback, nice words and... star rating. It would be a technical treat to see what you get done in the end. You do like making (YouTube) films don't you? Good luck. Greetings w
William_B Posts: 5225 Rating: (1202)
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8/31/2014 6:30 PM	Rate (0)
Lamboom Posts: 90 Rating: (0)	Hi William Yes, I do like making videos for YouTube... I can't remember if I ever posted these links for the tsunami wave tank project, which I helped design for the Chicago Meuseum of Science & Industry. My current Micro Oceans project will be vastly more sophisticated, an accurate science tool, versatile and very educational .. but, it's not ready for prime time yet. Gimmie a few more months. Here's the current project (and other spurious past endeavors which are on the site, and probably shouldn't be. http://www.microoceans.com/ The MSI Tsunami tank: (design phase) https://www.youtube.com/watch?v=crKNeA2pg-s The museum science exhibit: https://www.youtube.com/watch?v=1DTTcV2RiE4 http://www.youtube.com/watch?v=sVSUo4Dx3og Rregards, Michael, [snip] ...
Lamboom Posts: 90 Rating: (0)	Last edited by: CS Moderator at: 9/4/2014 12:53 PM contact data deleted Last edited by: Lamboom at: 8/31/2014 6:33 PM
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8/31/2014 6:55 PM	Rate (0)
William_B Posts: 5225 Rating: (1202)	Lamboom Hi William Yes, I do like making videos for YouTube... I can't remember if I ever posted these links for the tsunami wave tank project, which I helped design for the Chicago Meuseum of Science & Industry. My current Micro Oceans project will be vastly more sophisticated, an accurate science tool, versatile and very educational .. but, it's not ready for prime time yet. Gimmie a few more months. Here's the current project (and other spurious past endeavors which are on the site, and probably shouldn't be. http://www.microoceans.com/ The MSI Tsunami tank: (design phase) https://www.youtube.com/watch?v=crKNeA2pg-s The museum science exhibit: https://www.youtube.com/watch?v=1DTTcV2RiE4 http://www.youtube.com/watch?v=sVSUo4Dx3og Rregards, Michael, lamboom@earthlink.net Wow.. it sounds very interesting. Next week (when I am not paying by the MB for snale pace internet) I will sure watch some movies. Thank you for the share!! w
William_B Posts: 5225 Rating: (1202)
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