User's Manual

4.3.3 Establishing connection

The “Verbindung” (Connection) tab contains all controls for establishing a connection to the reader.

Depending on the unit, it is possible to establish a connection via RS 485 or RS 422, via USB or via

Ethernet.

4. Software

4.3.3.1 “ComPort” group box

The serial interface is used for the communication with the reader via RS 485 or RS 422. The

RS 485/RS 422 interface card supports the standard data rates of the serial interface on a PC. A level

converter is also required for the communication to convert the RS 232-compliant signal from the

PC into a differential RS 485/RS 422 signal.

A serial com port on the PC can be opened in this group box. For this purpose the correct

serial interface must be selected in the “Port” drop-down list box. Only the ports available on

the PC are displayed in this list box. It is not checked whether this port is already in use by other

applications.

The required baud rate must also be set in the list box below. The com port is opened by clicking

the “Öffnen” (Open) button and the port is then no longer available for other applications. If

this port is already in use by another application, a corresponding error message is displayed.

If the port is free, the reader can be operated using this port.

4.3.3.2 “USB” group box

If an RRUI4 is connected to the PC via USB, the unit is installed in the system as a USB HID-

compliant device. Correct installation can be seen in the application if a number appears in the drop-

down list box after reader installation. This number is unique for each reader. If several readers are

connected to the PC, the related reader can be selected on this menu. The connection between

the reader and PC is now established by clicking “Öffnen” (Open).

4.3.3.3 “Ethernet” group box

The application offers two ways of establishing a connection to the reader via Ethernet (only

possible on readers with Ethernet interface). On the one hand, it is possible to communicate

directly with the reader by entering the IP address, on the other hand it is also possible to

establish a connection using the reader's host name.

To integrate the reader into a corporate network, please contact your administrator who will be

able to allocate you a spare IP address. If you want to connect the reader directly to the PC,

please use a cross-link cable (crossed network cable). You can use a standard patch cable for

connecting to the PC using a hub or switch.

If you have a spare IP address, you must allocate this address to the reader. For this purpose a

connection must be established to the reader (e. g. via USB). It is now possible to enter the IP address

on the “Konﬁ guration” (Conﬁ guration) tab. After the conﬁ guration has been saved it is possible to

communicate with the reader using this address. For this purpose, mark the “IP-Adresse” (IP address)

box and enter this address. The connection is established by clicking the “Öffnen” (Open) button.

For the connection using a DNS name, there must be a correspondingly conﬁ gured DHCP and

DNS server in the network. If the reader is registered on the DHCP server and the DNS server, it is

also possible to connect to the reader using a network name. For this purpose, select the “Name”

box and enter the name agreed for the reader. The connection to the RRUI4 is established by

clicking the “Öffnen” (Open) button.