Numerical control apparatus
AssigneeFanuc Corporation
InventorsJiro Kinoshita, Kazunari Aoyama, Yoshiyuki Kubo, Yukio Okamura
Life of this patent
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Abstract
A machine-side position detection control unit (20) is provided in order to read a position feedback signal of a position detector (64) associated with a control axis (X axis) requiring machine-side position detection for controlling of a closed loop system. This makes unnecessary for providing a position detection control unit in a servoamplifier (30, 40, 50) for each axis. A numerical control unit (10) and the servoamplifier (30, 40, 50) for each axis are connected in a daisy chain form by a serial communication line.
Claims9
A numerical control apparatus, comprising:
- a numerical control unit;
- a servoamplifier for each axis, which drives and controls a servomotor;
- at least one machine-side position detector for detecting the position of a movable part of a machine driven by said servomotor;
- and
- at least one machine-side position detection control unit which is connected to said numerical control unit and said servoamplifier respectively by serial communication lines, has at least one connector for receiving a position detected signal from said machine-side position detector, and reads the detected signal received from said machine-side position detector via said connector to transmit said detected signal to said numerical control unit, wherein each of a plurality of connectors included in said machine-side position detection control unit can be made to correspond to any axis.
A numerical control apparatus, comprising:
- a numerical control unit;
- a servoamplifier for each axis, which drives and controls a servomotor;
- at least one machine-side position detector for detecting the position of a movable part of a machine driven by said servomotor;
- and
- at least one machine-side position detection control unit which is connected to said numerical control unit and said servoamplifier respectively by serial communication lines, has at least one connector for receiving a position detected signal from said machine-side position detector, and reads the detected signal received from said machine-side position detector via said connector to transmit said detected signal to said numerical control unit, wherein said machine-side position detection control unit has an interface for receiving a detected signal, other than the position detected signal, which is necessary for enhancing the controllability of the servomotor, in addition to the connector for receiving the position detected signal from said machine-side position detector.
A numerical control apparatus, comprising:
- a numerical control unit;
- a servoamplifier for each axis, which drives and controls a servomotor;
- at least one machine-side position detector for detecting the position of a movable part of a machine driven by said servomotor;
- and
- at least one machine-side position detection control unit which is connected to said numerical control unit and said servoamplifier respectively by serial communication lines, has at least one connector for receiving a position detected signal from said machine-side position detector, and reads the detected signal received from said machine-side position detector via said connector to transmit said detected signal to said numerical control unit, wherein said machine-side position detection control unit has a setting section capable of setting various detection data and arbitrarily setting various ones of control axes to be detected.
Dependencies are inferred from the claim text.