B&B Electronics ESR904 Benutzerhandbuch

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Server Properties Configuration 
Manual Documentation Number: ESR90x-0508m 
Chapter 5 
33 
B&B Electronics Mfg Co Inc – 707 Dayton Rd - 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 
values will remain. When DHCP is enabled, the IP Address, Netmask and 
Gateway fields become inaccessible and cannot be changed by the user. 
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A dynamic address assigned by the DHCP server may change if the server 
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. 
IP Address 
Software or hardware attempting to access the Serial 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 Serial Server is printed on a label on its bottom 
cover. 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 Serial 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 Start, then Run
- At run prompt enter: CMD 
- In the DOS window enter: Ping xxx.xxx.xxx.xxx (IP address for the server to 
be confirmed) 
 - The command will return the Ping results indicating 4 replies  
 
Figure 25.  Pinging using the DOS command window