US 11,774,929 B2
Field controller for a building management system
Boudhayan Bandyopadhyay, Kolkata (IN); Saikat Patra, Pune (IN); Khalil B. Mujawar, Thane (IN); and Neeraj S. Kale, Pune (IN)
Assigned to Johnson Controls Tyco IP Holdings LLP, Milwaukee, WI (US)
Filed by Johnson Controls Tyco IP Holdings LLP, Milwaukee, WI (US)
Filed on Aug. 6, 2021, as Appl. No. 17/395,762.
Claims priority of application No. 202021033636 (IN), filed on Aug. 6, 2020.
Prior Publication US 2022/0043407 A1, Feb. 10, 2022
Int. Cl. G05B 15/02 (2006.01); G06F 8/65 (2018.01)
CPC G05B 15/02 (2013.01) [G06F 8/65 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A controller for building equipment in a building management system, the controller comprising a processing circuit configured to:
receive a field signal from the building equipment on an input port of the controller;
determine a type of the field signal, including generate a first and second output voltage based on the field signal, wherein the first output voltage is proportional to a voltage drop across a first resistor of the controller, and the second output voltage is proportional to a voltage drop across a second resistor of the controller, wherein the first resistor and the second resistor are distinct from each other;
compare the first output voltage and the second output voltage; and
update a control logic comprising instructions for reading the field signal by tagging within the control logic the input port with the determined type of the field signal.