Page 28 AN-X4-AB-DHRIO (DH+) Nov 2022
Alias Configuration File
Create a text file for the IP alias configuration.
Each line is of the form
AliasIP x.x.x.13 -> Dhp 0o77
and maps an IP address to a Data Highway Plus address.
IMPORTANT!
Enter the IP address exactly as shown, with the three x’s.
AN-X can alias only on the lower byte of the IP address, even on larger
subnets. On smaller subnets, limit the lower byte to the maximum value
for the subnet.
Only the final digit in the IP address can be specified. It must be from 1 to 255. For example, if
the AN-X base IP address is 192.168.1.12 and the aliased address is x.x.x.13, then the aliased IP
address is 192.168.1.13
The Data Highway Plus station address can be entered in octal by preceding the numerical value
by 0o (zero and lower case oh). In the example shown the address is 77 octal.
There can be up to 63 alias definitions in the configuration file.
Anything after a semicolon, either at the end of a line or on a line by itself, is treated as a
comment.
TIP
Allocate one IP address for one DHP address
Configure Aliases
Use Automation Network/HMI IP Alias Configure in the web interface to send a configuration
file to the AN-X. Browse to select the filename, then click Send File to AN-X to transfer the file.
You must reboot the AN-X to use the new configuration.
IMPORTANT!
Aliases are configured only after the AN-X restarts. Errors in the
configuration file appear only after a restart.
Check the HMI IP Alias Log after the AN-X restarts to see if there are
any errors.
To view the currently active configuration, use Automation Network/HMI/IP Alias View in the
web interface.
Refer to page 42 for detailed information on using the web interface to configure aliases.
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