Is netmask important?
Yes, netmask is as important as the IP address. Think of netmask as a zip code that goes with a street address.
For most networks, 255.255.255.0 is the correct netmask. For IP addresses that start with 169.254.X.X, netmask 255.255.0.0 is correct.
If there is a network mask mismatch between the host PC and the 1500-OEM / 3000-OEM, Panel Plus will report this problem when connecting to the SLA hardware.