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plc : programable logic controller

 
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mohrsh



Joined: 19 Oct 2003
Posts: 88
Post17 Feb 2005 7:22   plc : programable logic controller
can someone explain about programming plcs(programable logic controller) ?
software needed and .....?
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IanP



Joined: 05 Oct 2004
Posts: 6360
Helped: 1509
Location: West Coast
Post17 Feb 2005 7:54   Re: plc : programable logic controller
For all 3 posts of yours (microcntrollers, PLCs and Visiual Basic) you first should go GOOGLe...
You will find pages like this one:
http://programmable-logic-controllers.globalspec.com/
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samyer



Joined: 16 Feb 2005
Posts: 4
Helped: 1
Post17 Feb 2005 22:29   Re: plc : programable logic controller
Do you know what type of PLC you want use? There are numerous types but they all essentially program the same way. I use several different types in my daily work. If you want to use something that is inexpensive then I would suggest the TWIDO by Telemechanique (SQUARE-D) or the ZELIO by the same company. These are on the order of $200.00 or less (or more depending on I/O, etc.). The ZELIO has a nice feature of being able to be programmed either on the PC, and then trasnferring it to the PLC, or directly at the PLC. PLC's are programmed in several ways, and each vendor typically has their own 'flavor' or software. Some software is free, some have a cost. There are two basic types of programming language, LADDER LOGIC and GRAFCET. I would recommend learning ladder logic as it is the most easily understood for the beginner. Did you have a particular task in mind?
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zmath



Joined: 14 Jun 2003
Posts: 62
Post18 Feb 2005 1:33   plc : programable logic controller
http://www.edaboard.com/ftopic96996.html
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beowulf



Joined: 19 Jan 2005
Posts: 49
Helped: 2
Post18 Feb 2005 1:43   Re: plc : programable logic controller
Here is a book that explains PLCs completely: by Hugh Jack (800 odd pages)

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