American International Electric SEG-M - Manual (Page 10)

3.7 Connecting the SEG-1 to a Max 3 System (RS-485)
You can also use the SEG-1 to connect your Max 3 or 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 each module to the backplane by connecting the 3-conductor wire harness supplied with the Max 3 from P5 to the RS-485
connector underneath each module on the backplane (J1 through J4).
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).
Page 10 of 34 Document Number: 6066005, Rev 3.2
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.