Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 288)

288 Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 8 EtherNet/IP Communications
Table 335 - Device Conflict over Duplicate IP Addresses
DNS Addressing To further qualify a module’s address, use DNS addressing to specify a host name
for a module, which also includes specifying a domain name and DNS servers.
DNS addressing makes it possible to set up similar network structures and IP
address sequences under different domains.
DNS addressing is only necessary if you refer to the module by host name, such as
in path descriptions in MSG instructions.
To use DNS addressing, perform this procedure.
1. Assign a host name to the module.
2. Configure the module's parameters.
In addition to the IP address, subnet mask, and gateway address, configure a host
name for the module, domain name, and primary/secondary DNS server
addresses.
Electronic Data Sheet (EDS)
File Installation Before the E300 Electronic Overload Relay EtherNet/IP Communication
Module is configured to communicate on an EtherNet/IP network, it must be
registered to the software that configures the network (e.g.,
Rockwell Automation RSLinx Classic and RSNetWorx for EtherNet/IP
software). A user registers the module by installing an EDS file. The EDS file for
the E300 Electronic Overload Relay EtherNet/IP Communication Module can
be obtained from one of two locations:
• Embedded in the module
• The Allen-Bradley EDS file download website.
If then
both modules support duplicate IP
address detection,
the first started module uses and retains its IP address.
The other module will detect a conflict, give up the IP
address and enter conflict mode.
both modules support duplicate IP
address detection and are started at
roughly the same time,
one of the modules surrenders the IP address and enters
conflict mode.
one module supports duplicate IP address
detection and a second module does not,
the second module generally keeps its IP address,
regardless of which module first obtains the IP address.
The module that supports duplicate IP address detection
will detect the conflict and give up the IP address.
NOTE: Contact the network administrator to have a host name assigned. Valid host
names should be IEC-1131-3 compliant.