B&B Electronics VESR4X4 - Manual - Manual (Page 59)

Section 7 - Listing/Descriptions of Serial Server Settings Vlinx VESR4x4 Serial Server
Page 59 of 70
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The MAC Address is a hardware level address of the serial server that cannot
be changed. It is assigned in the factory. Every Ethernet device manufactured
has its own unique MAC address. The MAC address of each serial server is
printed on the device's label. The MAC address of the currently selected serial
server is also displayed on the Login page of Vlinx Manager.
The Model number of the currently selected serial server is displayed on the
Login page of Vlinx Manager.
Network Protocols available for use on VESR4x4 serial servers include TCP,
UDP, VCOM and Paired Mode.
Network Watchdog controls the duration of network inactivity when a
network connection is determined idle and causes the connection to be forced
closed. The range is 1 through 65535 milliseconds.
Paired Mode enables two serial servers to operate across the network like a
"wire replacement" between two serial devices. (Paired Mode is also called
serial tunneling.) Serial devices connected to serial servers on each end of the
link can communicate as if they were connected by a serial cable.
 For Paired Mode to work one serial server must be configured as a TCP
server and the other as a TCP client.
 The serial server configured as the TCP client initiates connections. You
must set up the IP address and port number of the server that you want
the client (serial server) to communicate with. You also select whether
you want the serial server to connect at power up or only when it
receives data from the device connected to its serial port.
 The serial server configured as a TCP server waits for connections to be
initiated by another network device. You must set up the TCP port
number on which it will listen for connections and set the maximum (up
to four) number of simultaneous connections it will accept. You can filter
the connections it will accept based on specific IP addresses or ranges of
IP addresses that you specify.
Password. When you first receive the VESR4x4 serial server from the factory
the password is blank so that you can initially access the serial server without
entering a value into this field. To ensure security you should create and save
a password the first time you configure the serial server. After a password has
been set up it must be entered each time you login to Vlinx Manager. The
password is used to access the configuration pages from the Vlinx Manager
Login page and can be changed from the General page.
Serial Interface Modes. Four serial interface modes of operation are:
 RS-232 - Point-to-point serial communications connection used by PC
COM ports and many other systems. Capable of baud rates up to 115.2