US 12,334,849 B2
Method and apparatus for communication between analytic modules and a motor drive
Arun K. Guru, Brookfield, WI (US); Shankernarayan Ramanarayanan, Eden Prairie, MN (US); Kevin J. Riederer, Glendale, WI (US); James C. Sandell, Prior Lake, MN (US); Jon P. Vanderpas, Appleton, WI (US); and Chetan Chandrasekara, Chanhassen, MN (US)
Assigned to Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US)
Filed by Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US)
Filed on Mar. 30, 2022, as Appl. No. 17/709,330.
Prior Publication US 2023/0318498 A1, Oct. 5, 2023
Int. Cl. H02P 23/00 (2016.01); H02P 21/10 (2016.01); H02P 21/16 (2016.01)
CPC H02P 23/00 (2013.01) [H02P 21/10 (2013.01); H02P 21/16 (2016.02)] 18 Claims
OG exemplary drawing
 
1. A system for communication between a motor drive and at least one electronic device, wherein the motor drive is operative to control a motor in an industrial control system, the system comprising:
a first Ethernet communication interface in the motor drive, the first Ethernet communication interface configured to receive a first end of a single-pair Ethernet cable;
a first clock circuit in the motor drive, wherein a first update period in the motor drive executes as a function of the first clock circuit; and
an analytic module further comprising:
a second Ethernet communication interface, the second Ethernet communication interface configured to receive a second end of the single-pair Ethernet cable, wherein power is provided to the analytic module from the motor drive via the single-pair Ethernet cable,
a second clock circuit in the analytic module, wherein the motor drive is configured to transmit a synchronization command to synchronize the second clock circuit to the first clock circuit and the analytic module sets a second update period equal in duration to the first update period in the motor drive;
at least one input interface configured to receive a feedback signal from the at least one electronic device, wherein:
the feedback signal corresponds to an operating state in the industrial control system,
the feedback signal received from the at least one electronic device is sampled by the analytic module at a common time during each second update period,
the at least one input interface converts the feedback signal to a digital value, and
a processor configured to:
receive the digital value of the feedback signal from the at least one input interface,
insert the digital value of the feedback signal in a data packet, and
transmit the data packet to the motor drive via the single-pair Ethernet cable in real-time.