Deister electronic

RFID reader settings

For smooth communication between controller and RFID readers, some settings need to be made before the system startup. These include, for example, the baud rate for the serial communication. A proprietary tool from the manufacturer of the RFID reader may be required in order to transfer these settings to the RFID.

For all supported RFID reader models, the following standard data transfer settings have been tried and tested:

Depending on the hardware, other parameters can also be set, or the factory settings of the RFID reader can be used. These must then also be adopted in the software reader connection (see RFID reader connection).

Using the proprietary tools, the following special settings may have to be parameterized before the system is started:

RFID reader handling

Here, too, the "Polling" function should be noted, which can be used to call the command repeatedly in cases where the current transponder information is important (see command description).

In addition there is the peculiarity that, in the case of the proxEntry models, a polling command must be present in order to establish a connection to the transponder. In the case of UDL models, on the other hand, the configuration provides the automatic establishment of a connection to detected transponders, so that no polling command is absolutely necessary.

The block size corresponding to the tag must be configured in the RFID reader configuration.

Deister RDL devices support 4 bytes or 8 bytes block size.

Example: If a block size of 8 bytes is specified for the transponder, then the reader must be configured with the parameter iBlocksize:=8 and the read or write access via the structure ST_RFID_AccessData must take place with an 8-byte block size.

Deister RDL: A write command can write up to 36 bytes of data at a time. If more data is to be written to the transponder, it must be divided into several commands.

It must be pointed out here that not all peculiarities of every supported RFID reader model can be named here. Therefore you are referred to the manufacturer’s own documentation for more detailed information.

Configuration

Note the following when a new configuration is written to the RFID device (command SetConfig):

Deister RDL devices: Not every combination of configuration parameters is allowed (see ST_RFID_CfgStruct_DeisterRDL). Disregard of the required dependencies leads to an error (eRFERR_InvalidCfg):

If the configuration is transmitted as a register, these dependencies also exist and the RFID device will return an error code if inadmissible.