Method of Implementing and Operating and a Read/Write Unit for a System with Multiple Contactlessly Readable Transponders
First Claim
1. A method for operating a read/write unit in a system that includes a plurality of contactlessly readable transponders, each of the plurality of transponders having a unique identification number, comprising the steps of:
- connecting the read/write unit to an industrial control device;
detecting by the read/write unit, during a recognition phase, a first transponder of the plurality of transponders;
storing, at a start of a holding phase, the unique identification number of the detected first transponder in a holding register of the read/write unit, and ignoring by the read/write unit other transponders of the plurality of transponders during the holding phase; and
deleting from the holding register the unique identification number of the detected first transponder of the plurality of transponders to terminate the holding phase.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for implementing and operating, and a read/write unit for use in, a system that includes multiple contactlessly readable transponders each in having a unique identification number. The read/write unit is connected to an industrial control device of the system and, in a recognition phase, a first of the transponders is detected by the read/write unit. At the start of a holding phase, the identification number of the detected first transponder is stored in a holding register of the read/write unit. Then, during the holding phase, other detected transponders are ignored by the read/write unit. The identification number of the first of the detected transponders is thereafter deleted from the holding register to terminate the holding phase so that it is possible to communicate reliably with a unique transponder even over a relatively long time period without process disturbances arising from the presence of other transponders in the area of the read/write unit.
7 Citations
17 Claims
-
1. A method for operating a read/write unit in a system that includes a plurality of contactlessly readable transponders, each of the plurality of transponders having a unique identification number, comprising the steps of:
-
connecting the read/write unit to an industrial control device; detecting by the read/write unit, during a recognition phase, a first transponder of the plurality of transponders; storing, at a start of a holding phase, the unique identification number of the detected first transponder in a holding register of the read/write unit, and ignoring by the read/write unit other transponders of the plurality of transponders during the holding phase; and deleting from the holding register the unique identification number of the detected first transponder of the plurality of transponders to terminate the holding phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A read/write unit for use in a system that includes multiple contactlessly readable transponders, wherein the read/write unit is configured to:
-
connect the read/write unit to an industrial control device; detect, during a recognition phase, a first transponder of the plurality of transponders; store, at a start of a holding phase, a unique identification number of the detected first transponder in a holding register of the read/write unit, and ignore other transponders of the plurality of transponders during the holding phase; and delete the unique identification number of the detected first transponder of the plurality of transponders from the holding register to terminate the holding phase. - View Dependent Claims (17)
-
Specification