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US 2014/0094939 A1Published application
Industrial Control System With Position Offsets Embedded In Remote Devices
AssigneeRockwell Automation Technologies, Inc.
InventorScott A. Pierce
Life of this patent
Estimating the term…
Abstract
An industrial control system provides for distributed processing of position related signals by remote I/O modules to correct for spatial offsets of sensors or actuators associated with the I/O modules, the latter which may receive position data and may correct timing signals detected at the I/O modules according to a stored position offset within the I/O modules.
Claims17
An I/O module for an industrial controller comprising:
- an input for receiving an electrical signal from a sensor indicating a sensed condition relative to a moving frame;
- a network interface adapted to communicate with an industrial control network to receive periodic motion data indicating position of the moving frame with respect to a frame reference;
- an electronic computer communicating with a memory to execute a stored program contained in a fixed medium of the memory to:
- (1) extrapolate the periodic motion data to a current position value;
- (2) capture the current position value at a time of the electrical signal indicating the sensed condition;
- and
- (3) correct the captured current position value by a stored offset value indicating a difference between spatial positions of the reference of the periodic motion data and the sensor providing the electrical signal indicating a sensed condition.
4 more elements
An industrial control system comprising:
- at least one I/O module providing an input for receiving an electrical signal indicating a sensed condition relative to a moving frame;
- a network interface adapted to communicate with an industrial control network to receive periodic motion data indicating position of the moving frame with respect to a frame referenced position;
- and an electronic computer communicating with a memory to execute a stored program contained in the memory to:
- (1) extrapolate the periodic motion data to a current position value;
- (2) capture a current position value as triggered by the electrical signal indicating the sensed condition;
- (3) correct the captured current position value by a stored offset value indicating a difference between spatial positions of the reference of the periodic motion data and the sensor providing the electrical signal indicating a sensed condition;
- and
- a configuration device providing a network interface adapted to communicate with the industrial control network and having an electronic computer communicating with a memory to execute a stored program contained in the memory to communicate with the I/O modules to transmit one of:
- (1) an offset value to the I/O modules to provide the stored offset values;
- (2) a calibration command instructing the I/O module to cause the I/O module to:
- (a) extrapolate the periodic motion data to a current position value;
- (b) capture a current position value as triggered by the electrical signal indicating the sensed condition;
- and
- (c) store the captured current position value as a stored offset value.
11 more elements
An I/O module for an industrial controller comprising:
- an output for outputting an electrical signal to actuate an actuator
- a network interface adapted to communicate with an industrial control network to receive periodic motion data indicating position of the moving frame with respect to a frame reference and to receive an instruction for an action to occur at a trigger position with respect to the frame reference;
- and
- an electronic computer communicating with a memory to execute a stored program contained in a fixed medium of the memory to:
- (1) extrapolate the periodic motion data to a current position value;
- (2) correct the current position value by a stored offset value indicating a difference between spatial positions of the frame reference and the trigger position;
- and
- (3) output the electrical signal when the corrected current position matches the trigger position.
5 more elements
Dependencies are inferred from the claim text.