Gulf + Western Industries

William H Seipp

Donald R Soulsby

Jess F Fauchier

Stephen E Whiteside

In a programmable controller of the type including a microprocessor having output address terminals, output address lines extending to external addressable devices, input/output bi-directional data terminals and means for applying a binary status code made up of binary signals on the data terminals at a preselected time during a cycle of the microprocessor and indicative of the type of machine cycle to be processed by the microprocessor there is provided a system for energizing a hardwired logic circuit in response to a status code and logic on said address lines.

Programmable controller using microprocessor

There is provided a programmable controller comprising a standard microprocessor having output address terminals and input/output bi-directional data terminals and means for providing a binary code on the data terminals indicative of the status of the machine cycle to be processed by the microprocessor. This programmable controller includes a logic decoder means for producing a selected signal in response to logic signals on selected address terminals and in the status binary code of the data terminals. In addition, the programmable controller includes means for programming the HOLD state for the microprocessor. There is also provided an arrangement for expanding the number of interrupt conditions which can affect the INTERRUPT state of the microprocessor in the programmable controller.

A system for providing digital data representative of a selected analog signal on the data lines of a programmable controller using a central processing unit. The system employs a conversion circuit which converts the input analog signal to digital data on output data terminals upon receipt of a conversion signal simultaneously with an analog signal and which creates a completion signal when the conversion is completed. The system can use at least two analog inputs that receive at least two analog conditions and convert a selected one of the analog conditions to an analog signal. Upon actuation of one of the input modules, the selected analog signal of the selected module is directed to the conversion circuit. After conversion, the conversion completion signal of a conversion circuit then deactivates the actuated input module for the next conversion cycle.

System for converting analog signals to multiplexed digital data

A system for monitoring the logic conditions at the external addressable locations of a programmable controller wherein intermediate memory units are provided for controlling separate input and output locations. The controller periodically sequences the data in the intermediate memory units to maintain the logic conditions in the input and output locations. If the logic conditions are to be updated, the controller obtains access to the sequencing arrangement and changes the logic conditions within the intermediate memory units. Thereafter, the sequencing continues to maintain the desired logic conditions in the input and output locations.

Programmable controller having a system for monitoring the logic

An improvement in a module for a programmable controller including logic circuits and means for enabling the circuits upon receipt of a module enabling signal. The improvement includes a first set of input terminals arranged on the module and in a preselected pattern having a successive numerical order of 1, 2, 3 . . . n; a set of output terminals arranged on the module in the preselected pattern; means on the module for connecting the input terminal at position number one to the enabling means; means on the module for connecting each of the remaining input terminals to output terminals in the corresponding next lower numerical position of the preselected pattern of output terminals.

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Bettendorf, IA, United States of America

William H Seipp