American International Electric SEG-M - Manual (Page 11)

3.8 Connecting the SEG-1 to a MiniMax 3 System (RS-485)
You can also use the SEG-1 to connect your MiniMax 3 system to your LAN/WAN. Follow the instructions below and refer to the
diagram.
Run your RS-485 cable between terminal strip TS1 on the SEG-1 to TS3 on the backplane as shown in the diagram. You must also
connect the module to the backplane by connecting the 3-conductor wire harness supplied with the MiniMax 3 from P5 to the RS-485
connector underneath the module on the backplane (P1).
To connect additional backplanes to the system, simply connect TS3 on the first backplane to TS3 on the next backplane as shown
below. The SEG-1 is only required on the first backplane of the system (up to 64 doors Max; if you require more doors an additional
SEG-1 is required).
Document Number: 6066005, Rev 3.2 Page 11 of 34
Note: The maximum
distance between any
backplane and the SEG-1 is
4000 feet using 24AWG,
shielded, two twisted-pair
telephone cable with a shunt
capacitance of 16 pF/Ft.