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Radio Frequency Identification (RFID) is a small chip, or RFID tag, attached to some object that can be read at short range via radio waves by a tag reader. These items can be close together or far apart and are used for everything from credit cards, to inventory tracking to ticketing. Components can be broken down as a Tag (Transponder), a Reader, an Antenna, and sometimes an Interface.\u00a0 Sometimes the Reader and Antenna are enclosed into a single housing, sometimes they are 2 separate components.\u00a0 Sometimes there is added to this architecture an Interface which can translate data into other communication protocols and\/or manage a network of many Readers.<\/span><\/p>\n Passive Tags<\/i><\/b>\u00a0<\/span><\/i><\/p>\n A Tag carrying data, which can be RO (read only) or RW (read write) lies dormant until it is activated by the RF signal of a Reader.\u00a0 Upon being woken or excited by the Reader, the Tags begins to transmit it\u2019s data back to the Reader.\u00a0 Tags typically have an infinite life in terms of being read, and a finite life in terms of the amount of writes.\u00a0 100k writes is typical.<\/span><\/p>\n Active Tags<\/i><\/b><\/p>\n A Tag that is battery powered, most of which are known as TTO (tag talk only) whereby the Tag continually transmits it\u2019s data x amount of times per second, and if in range of a Reader, which is really more of a listening post, will be read. That range depends upon the frequency of the system, but our 433.92 MHz product operates up to several thousand meters. Tag life very much depends upon the size of the battery and number of data transmissions, but can be as high as 4 years.<\/span><\/p>\n Readers<\/i><\/b><\/p>\n Readers translate the 1\u2019s and 0\u2019s of Tag data into languages another machine or human can understand, like TTL or ASCII bytes. Readers can have other functions, like I\/O, sound a horn, illuminate a light, etc., or even logic tasks. Most often Readers are capable of serial (RS232, RS485, RS422), USB, TTL, Wiegand and Ethernet communication protocols.<\/span><\/p>\n Interfaces<\/i><\/b>\u00a0<\/span><\/p>\n Although Readers could output more in depth language protocols, PLC languages, this would make a single Reader more expensive thus it makes more sense to network simple Readers and most often this is handled by an Interface which can also manage a network of Readers, each Reader having its own unique address. Typical are protocols specific to a particular PLC manufacturer like Ethernet\/IP & DeviceNet (Allen Bradley PLC\u2019s), Profibus & Profinet (Siemens), Modbus RTU and Modbus TCP (Modicon) although standard TCPIP Ethernet and serial communications can also be offered.<\/span><\/p>\n First and foremost that depends upon the read range necessary, followed by, to what material will the Tag be mounted (metal or non-metal).<\/span><\/p>\n What is RFID? Radio Frequency Identification (RFID) is a small chip, or RFID tag, attached to some object that can be read at short range via radio waves by a tag reader. These items can be close together or far apart and are used for everything from credit cards, to inventory tracking to ticketing. […]<\/p>\n","protected":false},"author":4,"featured_media":35637,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[71,4712],"tags":[],"class_list":["post-35358","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articulos","category-publicaciones-en-ingles"],"yoast_head":"\nWhat Types of Tags are There and What’s the Difference?<\/b><\/h3>\n
What Else Will I Need Now That I know the Tags I’m Looking for?<\/b><\/h4>\n
What frequency should I consider for my application?<\/b><\/h4>\n
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