Installation Manual Part 2
Installation manual Reader 45
Modications, misprints and errors excepted
English
6. Operating the reader
The communication parameters are grouped as follows:
1 Baud rate – the speed of the connection. All popular serial data rates up to 230,400 bps are supported
2 Data bits – the number of data bits transmitted per byte. The card supports 5 – 8 data bits.
3 Parity – a bit for security of the data transmission
If None is selected, this bit is not transmitted. For all other settings this bit is transmitted. The even or odd parity
checks whether the number of bits including the parity bit is even or odd. Based on this information the recipient
can determine whether a bit has been switched. Mark and space specify whether the parity bit should be
transmitted with a xed 1 or 0. In this case no data transmission security is achieved.
3 Stop bits – species whether the transmission of a byte should be terminated with one or two stop bits.
4 Flow control – for readers with the appropriate interface, this allows specication of whether the synchronisation
between the PC and reader should be by software None or by hardware wires (Hardware).
Note
Note that for a point-to-point connection, the setting of this parameter must be the same for both participants,
otherwise no connection can be established. RS232 readers, whose serial interface is performed
via 4-pin M12 connector, do not support hardware ow control.
The RS232 card has a further ve outputs, which can be used for activation of LEDs. The conguration parameters
for these outputs can be found under the Output header.
Note
Not all reader hardware issues support this functionality. Please check the reader data sheet for information.