Abstract: A method and system is provided for automatically reassigning an interface card and devices associated with the interface card in a programmable logic controller system from a non-deterministic operating environment to a deterministic operating environment so that the change is performed essentially instantaneously to avoid disruption of operations of the PLC devices associated with the interface involved in the reassignment. All operating system registries and configurations are automatically performed. The move provides for an improved response time for devices associated with and controlled by the card.

Abstract: A method and system is provided for automatically reassigning an interface card and devices associated with the interface card in a programmable logic controller system from a non-deterministic operating environment to a deterministic operating environment so that the change is performed essentially instantaneously to avoid disruption of operations of the PLC devices associated with the interface involved in the reassignment. All operating system registries and configurations are automatically performed. The move provides for an improved response time for devices associated with and controlled by the card.

Abstract: A high speed programmable logic controller is taught. Briefly stated a Programmable Logic Controller having memory, a microprocessor and a Co-Processor are operatively interconnected using a Harvard style architecture therefore having separate data and instruction busses. The Co-Processor acts as a Boolean Processor and is therefore able to simultaneously perform instruction fetches and executions thereby resulting in substantially increased overall speed of the PLC and therefore allowing for fast process control.