Elatec TCP3 3.0.3.1 Technical Manual page 16

4. Discovering TCP3 Devices on the network
selecting "Start Discovery" a new search will begin as queries are sent to each IP address on the list.
As the various converters respond, their information will populate the various TCP3 Config fields. This
method is useful for checking the status of a known installed population of devices. Converters which fail
to respond indicate that attention may be needed.
Figure 4.6.: Sample configuration file Using CIDR Notation
If the addresses of the converters are not known and only the subnet is known, a text file can be built
as shown in Figure 4.6. With CIDR also known as slash notation, the address is supplied along with the
netmask. Once that file is loaded, the TCP3 Config main window will initially be populated with the list of
subnets to be searched.
Figure 4.6 file presents two different subnets to be explored. 192.168.8.0/24 will use a subnet mask of
255.255.255.0 and will search IP addresses in the range 192.168.8.0 - 192.168.8.255 for a total of 256
addresses.
Note CIDR search is restricted to /24. Any number smaller than /24 could cause a very large search which
could take a long time and could take the customer's network down. It might be interpreted as a denial of
service attack. As a result any number other than /24 will be ignored. For an efficient search, select many
individual subnets.
Figure 4.7.: Sample configuration file Using IP Ranges
If the addresses of the converters are not explicitly known but you have a rough idea where they reside a
search can be constructed to explore a limited number of addresses with a range specification. A text file
can be built as shown in Figure 4.7. Once that file is loaded, the TCP3 Config main window will initially be
populated with the range of IP addresses to be searched.
Upon selecting "Start Discovery", the range notation will be replaced and updated with a list of IP addresses
of the converters which have responded.
Additionally each of these search techniques can be combined into one search file.
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