W&T
Subject to errors and modifications
15
The following parameters can be assigned to the Web-IO 8x
Thermometer using these protocols:
■
IP address
■
Subnet mask
■
Gateway address
It is not possible to assign other parameters or a lease time.
Functionality
To obtain an IP address, the device sends after every new start
a corresponding BOOTP request as a broadcast to the network.
The resulting reply generated by the DHCP/BOOTP server con-
tains in addition to the IP address the subnet mask and gate-
way address. The Web-IO 8x Thermometer immediately places
this information in its non-volatile memory.
When placing the unit into service in DHCP/BOOTP networks,
please consult with your system administrator. If DHCP will be
used for assigning the address, you must mention that a reser-
ved IP address is required. To maintain the respective address
database, the administrator needs the Ethernet address of the
Web-IO 8x Thermometer, which can be found on the sticker on
the housing.
Once the necessary entries have been made, the device auto-
matically obtains the desired IP address after each reset. To en-
sure that the Web-IO 8x Thermometer can also be reached if
the DHCP/BOOTP server fails, the previous IP address is retai-
ned if no reply follows.
