How RFID with IO-Link Eases Machine Access
The use of RFID for machine access control and operation is nothing new. Depending on the application, different frequency ranges are used, either LF, HF, or UHF. Recently, there has been a trend that HF read/write heads with IO-Link are increasingly being used for precisely these applications. As always, the goal is to ensure only authorized personnel operate machinery. Also valued is the ability to retrieve an operation log and how each worker parameterizes the machines.
Users who were previously of the opinion that RFID was somehow too complicated have quickly changed their view in practice. In this blog article we take a closer look at the topic and show you possible use cases.
How Does RFID with IO-Link Work?
The operation of HF read/write heads with IO-Link is simple and intuitive. Starting in “Easy Mode”, the heads instantly start looking for an RFID tag to read. A user-friendly web interface allows easy parameterization and setting changes.
An RFID card, i.e., an RFID transponder in credit card format, is a great solution for machine access applications. To operate a machine, a potential user waves its card over the RFID reader. The data is checked against a truth table in a PLC to make sure the user is allowed to operate the machine. Using RFID read/write heads with IO-Link, login data could be sent to a database to keep track of who logs in, and when.
Machine operators only have to hold their RFID transponder over the RFID reader and authorization takes place automatically and in real time. Pictured here is the Pepperl+Fuchs IQT1-F61-IO read/write station with IO-Link.
For the connection of IO-Link devices you need an IO-Link master. Up to eight HF read/write heads with IO-Link can be connected per IO-Link master. This makes it easy and affordable to set up multiple reading points on the machine to enable the tiered approval of machine operation. If the software or machine to be accessed has an appropriate rights and roles concept, operators, service personnel, and administrators could each have their own read point.
Three Examples for Machine Access Applications Using RFID with IO-Link
Automatic Ball Bearing Sorting Machines