Description of server properties - 31 – B&B Electronics ESP904 User Manual
Page 21
Server Properties Configuration
Manual Documentation Number: ESP904-0504
Chapter 5
31
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
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The VLINX Serial Server can be configured using any of four different user
interfaces: the
ESP Manager
software, the
Web Server
,
Console Mode
or
Telnet
. The
Server Properties
described in this chapter can be changed from
any of these user interfaces.
Description of the Server Properties
Server Name
A new Server Name of up to 16 characters can be entered. If more than one
ESP901 or ESP902 or ESP904 Servers are connected on the LAN it is
recommended that a new name be assigned to each. When the ESP Manager
finds ESP Servers on the LAN it displays the server name and IP Address
allowing the user to distinguish between ESP servers.
Password
Entering a password activates a security feature on the serial server. Once a
password is entered it will be required to access the menu and make changes.
DHCP
DHCP servers are a part of numerous LAN management systems. The DHCP
field provides two choices:
Disable
and
Enable
. Disable is the normal, or
default, setting. When enabled, the ESP904 will send a DHCP request to the
DHCP server, which will assign a dynamic IP address, net mask, and
gateway to the ESP904. If a DHCP server is not available on the network the
ESP904 will time out after 10 seconds and the default values will remain.
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A dynamic address assigned by the DHCP server may change if the ESP904
loses the Ethernet connection or power is removed. The host (client)
communication software requests a connection to the specific IP address of the
serial server. If the DHCP reassigns a different IP address the software will not
be able to communicate with the hardware. Therefore, using a static IP address
is recommended.
Server Properties Configuration
32
Chapter 5
Manual Documentation Number: ESP904-0504
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
IP Address
Software or hardware attempting to access the ESP904 server via the
network must know the
IP Address
of the server. A static IP address is
retained and remains the same each time the server is powered up or
starts/restarts. The default IP address of the ESP904 server is printed on a
label on the bottom cover of the ESP904. Entering an appropriate address in
the IP Address field and updating the server will change the server’s IP
address. The network administrator can assign/establish the static address or
group of addresses to be used.
The IP Address of the ESP904 server can be confirmed using the DOS Ping
command.
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To use Ping to check for communications:
- Access a DOS window (in XP click on Start, then Run)
- At run prompt enter: CMD
- In the DOS window enter: Ping xxx.xxx.xxx.xxx (IP address for the ESP904
to be confirmed)
- The command will return the Ping results indicating 4 replies
Netmask
The default LAN netmask is configured for a Class C address. The user may
change this. Default is 255.255.255.0
Gateway
The Gateway IP address allows users to access the serial server from outside
the LAN.
MAC Address
The MAC address is fixed and cannot be changed. It is assigned in the
factory. Every Ethernet device manufactured has it own unique MAC
address.
Link Status
Link status automatically displays the type of Ethernet connection. It will
either display 10BaseT or 100BaseTX in full duplex or half duplex. This will
depend on the LAN, switches, hubs used in the LAN topology.