Mitsubishi Electric MELFA FR CR800 Series User Manual page 638

The communication time is long when using a backup etc.
(3)
In the Windows Firewall settings, if inbound communication of Communication Server 2 (RoboCom.exe) is
blocked, change to allow the connection.
Check item or cause
If there are one or more "RoboCom" lines in
the [Inbound Rules] of the [Windows Firewall] -
[Advanced settings] screen, is [Allow the
connection] selected for all these lines?
Spline files cannot be saved.
(4)
See "(3) The communication time is long when using a backup etc.".
27-638
Solution
If there are "RoboCom" lines with [Block the
connection] selected, change them to [Allow the
connection].
27-638