Publication 1734-UM011A-EN-P - February 2004
3-10 Configure the 1734-AENT Adapter for Your EtherNet/IP Network
You can then open the file containing the Relation List at a later session.
Use DHCP Software to
Configure Your Adapter
DHCP (Dynamic Host Configuration Protocol) software automatically assigns
IP addresses to client stations logging onto a TCP/IP network. DHCP is
based on BootP and maintains some backward compatibility. The main
difference is that BootP was designed for manual configuration, while DHCP
allows for dynamic allocation of network addresses and configurations to
newly attached devices.
Be cautious about using DHCP software to configure your adapter. A DHCP
server typically assigns a finite lease time to the offered IP address. When 50
percent of the leased time has expired, the 1734-AENT adapter will attempt to
renew its IP address with the DHCP server. The possibility exists that the
adapter will be assigned a different IP address, which would cause the adapter
to cease communicating with the ControlLogix controller. Please refer to the
sections Configure the 1734-AENT with Fixed IP Address on page 4--18 to
configure the adapter with a fixed IP address.
What’s Next?
The following chapter describes an example application in which you
configure discrete I/O using a rack optimized connection.
ATTENTION
To avoid unintended control, the 1734-AENT adapter
must be assigned a fixed IP address. The IP address of this
adapter should not be dynamically provided. If a DHCP
server is used, it must be configured to assign a fixed IP
address for your adapter.
Failure to observe this precaution may result in unintended
machine motion or loss of process control.
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