Method of verifying an extension area sensor controlled, master controller of area sensors, and cover to be used when no slave controller is added
AssigneeKeyence Corporation
InventorAkiji Yamaguchi
Life of this patent
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Abstract
A method of verifying an addition of a slave controller to a master controller of more than one area sensor, including an electrical mechanism which determines if a slave controller is present, or detects whether a cover having a projection or a shorting circuit is mechanically attached to the master controller if no slave controller is present, the presence of the cover indicating that no slave controller is added, and if neither the slave controller nor the cover is detected, an abnormality is indicated.
Claims9
A method of verifying an addition of a slave controller to a master controller of more than one area sensor by electrical means of recognizing an extension of the slave controller, comprising the step of:
- detecting, via the electrical means, whether a cover is mechanically connected to the master controller, the cover being connected to the master controller indicating that the slave controller is not present.
A master controller of area sensors, each having multiple optical axes, the master controller comprising:
- an extension recognizing circuit electrically connectable to a slave controller for adding an extension area sensor;
- a switch which, when manipulated, prevents the extension recognizing circuit from recognizing a slave controller;
- and
- a manipulation hole through which the switch is externally manipulated from the master controller.
Dependencies are inferred from the claim text.