Auxiliary control system for use with programmable logic controller in a press machine
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United States of America Patent
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Jun 25, 2002
Grant Date -
N/A
app pub date -
Nov 2, 1998
filing date -
Nov 2, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An auxiliary control system is operatively associated with a press machine controller including a programmable logic controller having a main processor. The auxiliary control system includes a sensor assembly arranged to provide sensor information which is representative of the condition of the press machine. An auxiliary processor is arranged to monitor for the occurrence of press operating events as signified by the sensor information. The auxiliary processor provides a state signal to the press controller which is representative of the results of the monitoring activity to enable the PLC to control the press machine. Additionally, an improved press machine PLC includes an auxiliary sensor assembly for providing sensor information which is representative of the condition of the press machine. An auxiliary logic processor is arranged to perform logic operations in respect of the sensor information and to generate control signals based upon the logic operations performance results for use in controlling the press machine. An auxiliary output device is arranged to interface the auxiliary logic processor with the machine actuators to enable communication therebetween.
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