	US 12,204,477 B2
	Communication system for elevators
Marcial Lendi, Naefels (CH); and Oliver Nadig, Chur (CH)
Assigned to Cedes AG, Landquart (CH)
Filed by CEDES AG, Landquart (CH)
Filed on Dec. 19, 2022, as Appl. No. 18/067,986.
Claims priority of application No. 21217351 (EP), filed on Dec. 23, 2021.
Prior Publication US 2023/0205716 A1, Jun. 29, 2023
Int. Cl. G06F 13/362 (2006.01)

CPC G06F 13/362 (2013.01)

10 Claims

1. A communication system for an elevator, the communication system comprising:

a bus controller; and

a plurality of bus nodes, wherein each bus node, of the plurality of bus nodes, is connected to one or more elevator sensors of the elevator and configured to forward sensor data from the one or more elevator sensors to the bus controller,

wherein the bus controller is configured to:

periodically send requests to the plurality of bus nodes and to receive responses from the plurality of bus nodes, wherein the bus controller is configured to:

select a first group of bus nodes for a first request of the plurality of requests,

select a second group of bus nodes for a second request of the plurality of requests, and

wait to send the second request to the second group of bus nodes until a response to the first request has been received by the bus controller.