Apparatus and methods for using USB in programmable logic controllers
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United States of America Patent
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N/A
Issued Date -
Jan 2, 2003
app pub date -
Jul 2, 2001
filing date -
Jul 2, 2001
priority date (Note) -
Abandoned
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Abstract
A programmable logic controller (PLC) includes a central processing unit (CPU), at least one input/output (I/O) module and a communications interface between the CPU and the I/O module. The communications interface incorporates a universal serial bus (USB) protocol to create a standard, open interface providing a low cost, reliable communication link.
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