Mael
Member
Hello everyone,
I am starting my first project with PLC and I have few obstacles that i can't find answers to I hope someone will have answers here.
I try to build few machines that we already have but instead having them analog i would like to have them be PLC based so i can gather data from them. I also try to change way of triggering the cut from laser beam break to encoder.
I need to get really high tolerance on the cut so i try to minimize the error as much as i can. I was thinking about using MicroLogix1400 or 1500 as my processor but i am not sure if they will support 842A (i need around 8000 or more ppr, encoder will run slow around 30-50 rpms, but the length cutted may change from job to job so i need to be able to change the length from operator interface). encoder from Allan Bradley since they are SSI and if i will get 842 modules that change from SSI into parallel if i will get fast enough read from it and how exactly to program ladder logic for it. I would need also a response time of the system at the level of 1 ms. Can such i restart the encoder after each cut without fear of loosing a lot of tolerance?
Can someone tell me if this would be possible with those or suggest some other set up or show me some resources where i can get some more knowledge. I run through all the manuals of the above hardware but i am still not sure i can pull it through. If you need me to clarify the situation more please ask?
Thank you,
I am starting my first project with PLC and I have few obstacles that i can't find answers to I hope someone will have answers here.
I try to build few machines that we already have but instead having them analog i would like to have them be PLC based so i can gather data from them. I also try to change way of triggering the cut from laser beam break to encoder.
I need to get really high tolerance on the cut so i try to minimize the error as much as i can. I was thinking about using MicroLogix1400 or 1500 as my processor but i am not sure if they will support 842A (i need around 8000 or more ppr, encoder will run slow around 30-50 rpms, but the length cutted may change from job to job so i need to be able to change the length from operator interface). encoder from Allan Bradley since they are SSI and if i will get 842 modules that change from SSI into parallel if i will get fast enough read from it and how exactly to program ladder logic for it. I would need also a response time of the system at the level of 1 ms. Can such i restart the encoder after each cut without fear of loosing a lot of tolerance?
Can someone tell me if this would be possible with those or suggest some other set up or show me some resources where i can get some more knowledge. I run through all the manuals of the above hardware but i am still not sure i can pull it through. If you need me to clarify the situation more please ask?
Thank you,