RFID devices use radio frequencies to read and transmit data. RFID read/write modules exchange data with RFID tags which store data in local memory. They may also communicate with an intelligent device, such as a PLC or computer, over a network.
RFID (Radio Frequency IDentification) devices use radio frequencies to identify and track objects by means of electronic labels. These labels, called tags, are attached to target objects and are a type of transponder that stores identification data. Compared to reading barcodes or using camera systems, RFID technology doesn't require a line of sight between the tag and the Read/Write module, and tags can store a large amount of data that can be edited as opposed to a fixed barcode. This technology can be used in place of traditional identification methods but excels in automated applications for track and trace tasks.
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RFID Read-Write modules are a type of transceiver that can communicate identification data with electronic tags using high-frequency RFID technology. Contrinex RFID Read-Write modules offer fast data transfer times and can communicate to higher-level devices such as a PLC using the IO-Link protocol.
RFID tags are transponder units that are attached to a product or container and contain electronic memory for storing identification data. Both a fixed memory for storing a unique preset number (i.e. an identifier), as well as user memory for storing application data, are available. Writeable data may include, for example, the object's history or the parameters of operations to which it will be subjected. RFID tags are unaffected by dirt or other visible marring and do not require line of sight to the read/write modules to operate.