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1. Download Idtronic Driver Update
2. Download Idtronic Driver Software

This sample program enables the use of an iDTRONIC RFID reader in the TwinCAT PLC.

Connection takes place by means of USB and the corresponding driver creates a virtual COM port. This port is displayed in the Windows Device Manager and the assigned port number can be determined and if necessary changed.

Further requirements for the use of the TwinCAT sample program:

Download TwinCAT 3 project: TcRfid_IdTronic_Sample.zip

The complete application is located in the program block IdTronic_Communication(). The background communication is handled by an instance of the function block SerialLineControlADS from the Tc2_SerialCom library. Messages are received and made available in the structure stRcvMessage (ST_IdTronic_ReplyMessage) for further processing. Various command messages can be transmitted to the reader after parameterizing the structure stSendMessage (ST_IdTronic_CommandMessage).

The correct COM port must be parameterized in order to ensure the background communication with the RFID reader. Details for the serial communication are documented in TF6340 Serial Communication.

A correctly opened port is signaled via the variable bPortOpened. Communication with the RFID reader can commence if this variable is TRUE. The function blocks FB_IdTronic_Rfid_RcvMessage and FB_IdTronic_Rfid_SendMessage are used for this; they are connected to the background communication via the buffer instances RxBuffer and TxBuffer. These two function blocks offer reading and writing options and are not adapted themselves. They are already generally implemented such that an individual application can be created solely by means of parameterization within the program block IdTronic_Communication.

A choice of over 40 commands is available with the enumeration E_IdTronic_Command. The parameterization of the command message takes place in accordance with the proprietary protocol in the structure stSendMessage.

Following the adaptation of this parameter structure the command message can be transmitted to the RFID reader.

Messages received are displayed in the structure stRcvMessage and only the details need to be processed further.

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stRcvMessage is structured as follows:

Download Idtronic Driver Software

Analogous to the sequence above, this sample program can be used to program complex state machines, in the course of which comprehensive communication is established between the TwinCAT PLC and the iDTRONIC RFID reader.