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IRB 6400 M98 LAN

hi everyone, i'm a newbie.
i have several IRB 6400 M98, with OS S4C 3.2.
they have in the A71 a Network I/O computer DSQC336 with Ethernet connector.

i want to connect all the robots to a single PC for simplicity at load-save programs and management.

but i cannot see a protocol established in the OS for Ethernet (not either IPs configuration)
the product manual say its posible but i don't know how.

Thanks in advance.