Position determining apparatus for coordinate machine
A programmable device which produces a plurality of outputs is connected to a controller having less input ports than there are outputs to be received by the controller. To overcome this problem the controller is programmed to send different signals to the device, one at a time, upon receipt of a pa...
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| Sprache: | eng |
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| Zusammenfassung: | A programmable device which produces a plurality of outputs is connected to a controller having less input ports than there are outputs to be received by the controller. To overcome this problem the controller is programmed to send different signals to the device, one at a time, upon receipt of a particular one of which, the device sends back a corresponding one of its outputs. In the specific example described the signals are different sequences of timing pulses. |
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