Base board, power supply unit and CPU unit mounted thereon in programmable controller system
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United States of America Patent
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May 21, 2002
Grant Date -
N/A
app pub date -
Aug 5, 1998
filing date -
Aug 26, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A programmable controller system is disclosed. The system comprises a base board having a plurality of slot, a power supply unit attached to at least one of the slots for supplying power to the base board, a CPU unit attached to at least one of the slots for outputting an I/O unit specification signal for specifying one executing I/O unit from among at least one I/O unit attached to ones of the remaining slots for executing I/O processing, discrimination means for discriminating amount of shifted position of the I/O unit which is changed in accordance with number of slot occupied by the power supply unit and the CPU unit, correction means for correcting the I/O unit specification signal based on the amount of shifted position of the I/O unit discriminated by the discrimination means, selection means for selecting one actual slot in which the I/O unit specified by the I/O unit specification signal is attached based on the corrected I/O specification signal.
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