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This application uses the IP address of your computer and its subnet mask to
find the scan broadcast address. When you click on scan, a broadcast
message will be sent to all devices in your subnet and answers will be listed.
WARNING: it only works with devices in your subnet!
How does it work?
When you click "Scan", the software simply sends a "Read registers"
command to a broadcast address on UDP port number 7010 (see chapter
about main port at page 13).
The broadcast address depends on the network subnet mask present on
your PC.
FMod-TCP User Manual v.2.8