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Modbus FAQ

... together. To create a network the devices must use a RS-485 network and have a unique slave address. References: ... 9. What are RS-232, RS-422 and RS-485 and how are they different? These are standards for serial ... duplex) and has a distance capacity of 4000 meters. RS-485 can address up to 32 slaves using either a two wire (half duplex) or ...

Story - Tim Young - 2006-06-01 22:05 - 3 comments

Allen Bradley's PLC Programming Handbook

    This handbook is a collection of programming overviews, notes, helps, cheat sheets and whatever that can help you (and me) program an Allen Bradley PLC. If you have experience with AB then please contribute ...

Book page - Tim Young - 2007-01-22 10:26 - 89 comments

Fatek Automation Corp

... 3 communication ports. The one of communication ports is RS-485, whose transmitter/receiver has 12 byte FIFO, communication speed up to ...

weblink - Tim Young - 2008-07-16 16:45 - 0 comments