Patent ID: 11940786
Assignee: HONEYWELL INTERNATIONAL INC.
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A method of controlling operation of a building management system component using a virtual controller and an intelligent Input/Output (IO) module that receives control commands from the virtual controller and provides local control commands to the building management system component, the method comprising:
receiving user input via a programming tool to designate a control logic bifurcation that identifies which control logic for the building management system component will reside in the virtual controller and which control logic for the building management system component will reside in the intelligent IO module;
wherein control logic that is required to remain operational when communication between the intelligent IO module and the virtual controller is not functioning normally is assigned to the intelligent IO module;
using the programming tool to program the virtual controller and the intelligent IO module in accordance with the user designated control logic bifurcation;
the virtual controller determining control commands for the building management system component in accordance with the control logic residing on the virtual controller, the virtual controller communicating the control commands to the intelligent IO module;
the intelligent IO module providing local control commands to the building management system component based on the control logic residing on the intelligent IO module and on the control commands received from the virtual controller when the intelligent IO module determines that communication within the virtual controller is functioning normally; and
the intelligent IO module providing local fail-safe commands to the building management system component based on the control logic residing on the intelligent IO module when the intelligent IO module determines that communication with the virtual controller is not functioning normally.