Motor controller for application in a motor controller network
AssigneeKollmorgen Corporation
InventorsGeorge Henry Ellis, Gregory Robert Lee
Life of this patent
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Abstract
A motor controller that incorporates all of the advantages of RS-485, yet allows the user to interface with the controller through RS-232 without a separate RS-232 to RS-485 converter. The controller includes a port for receiving RS-232 compatible signals. The RS-232 signals are converted to RS-485 compatible signals which are, in turn, converted into logic level signals suitable for the motor controller. The RS-485 signals may be shared among a number of controllers, and an RS-485 port is provided for such a purpose. RS-485 ports can be interconnected via a common bus so that a number of motors can be separately controlled from a master controller (usually a personal computer) that is connected to any available RS-232 port.
Claims8
A motor control network for separately controlling a plurality of electric motors through a plurality of motor controllers from a common master controller, comprising:
- (1) a plurality of motor controllers each including
- (a) an RS-232 port;
- (b) an RS-485 port;
- and
- (c) a logic level motor drive for energizing an associated electric motor according to logic level commands;
- wherein
- (i) each said RS-232 port is coupled to said RS-485 port via a converter;
- and
- (ii) each said RS-485 port is coupled to said logic level motor drive via a converter to supply said logic level commands from signals at said RS-485 port;
- (2) a master controller coupled to one of said RS-232 ports;
- and
- (3) said motor controllers being interconnected via said RS-485 ports for control from said master controller.
A motor controller adapted for control of an electric motor from a master RS-232 source, comprising:
- (a) an RS-232 port;
- (b) an RS-485 port;
- (c) said RS-232 port being coupled to said RS-485 port via a converter used for converting RS-232 signals to RS-485 signals;
- (d) a logic level motor drive for generating motor drive signals according to logic level commands;
- and
- (e) said RS-485 port being coupled to said logic level motor drive via a converter to supply said logic level commands.
A motor control network including:
- a plurality of motor controllers each adapted for control of an electric motor from a master RS-232 source, and including
- (a) an RS-232 port;
- (b) an RS-485 port;
- (c) said RS-232 port being coupled to said RS-485 port via a converter used for converting RS-232 signals to RS-485 signals;
- (d) a logic level motor drive for generating motor drive signals according to logic level commands;
- (e) said RS-485 port being coupled to said logic level motor drive via a converter to supply said logic level commands;
- and
- (f) a master controller connected to one of said RS-232 ports;
- and
- wherein said plurality of motor controllers are interconnected through said RS-485 ports.
A motor control network for separately controlling a plurality of electric motors through a plurality of motor controllers from a common master controller, comprising:
- (1) a plurality of motor controllers each including
- (a) a first port that supports single ended signaling;
- (b) a second port that supports double ended signaling;
- and
- (c) a logic level motor drive for energizing an associated electric motor according to logic level commands;
- wherein
- (i) each said first port is coupled to said second port via a converter;
- and
- (ii) each said second port is coupled to said logic level motor drive via a converter to supply said logic level commands from signals at said second port;
- (2) a master controller coupled to one of said first ports;
- and
- (3) said motor controllers being interconnected via said second ports for control from said master controller.
A motor controller adapted for control of an electric motor from a master single ended signaling source, comprising:
- (a) a first port that supports single ended signaling;
- (b) a second port that supports double ended signaling;
- (c) said first port being coupled to said second port via a converter used for converting single ended signals to double ended signals;
- (d) a logic level motor drive for generating motor drive signals according to logic level commands;
- and
- (e) said second port being coupled to said logic level motor drive via a converter to supply said logic level commands.
A motor control network including
- a plurality of motor controllers each adapted for control of an electric motor from a master single ended signaling source and including:
- (a) a first port that supports single ended signaling;
- (b) a second port that supports double ended signaling;
- (c) said first port being coupled to said second port via a converter used for converting single ended signals to double ended signals;
- (d) a logic level motor drive for generating motor drive signals according to logic level commands;
- (e) said second port being coupled to said logic level motor drive via a converter to supply said logic level commands;
- and
- (f) a master controller connected to one of said first ports;
- and
- wherein said plurality of motor controllers are interconnected through said second ports.
Dependencies are inferred from the claim text.