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© Sealevel Systems, Inc. R91001 Manual | SL9211 11/2022
RS-485 Expansion
The Relio R9 provides a RS-485 Expansion Port. The port is available on the left side of the enclosure via
the RJ-45 connector labeled “RS-485 OUT”, as well as via a 4 pin terminal block.
The Relio R9 includes a RS-485 expansion connector on the left side of the unit that is internally connected
to the same pins on the screw terminals, also on the left side of the unit. This offers two convenient options
for adding additional expansion modules from the SeaI/O product line.
The RJ45 port on the left side of the Relio R9 is a RS-485 Expansion Port (labeled “RS-485 Out”)
and is NOT an Ethernet port. Damage to Ethernet networking equipment can result if connected to
the RS-485 RJ45 connector.
Connector:
RS-485 Expansion (RJ45)
Manufacturer:
Xmultiple
Part Number:
XRJM-S-01-8-8-F2 or XRJM-S-01-8-8-0
Description:
RJ45 Socket, W/O LEDs, Shielded
Mates with:
Standard RJ45 Plug
Pin
Signal
1
9-30VDC Source
2
9-30VDC Source
3
Not connected
4
485+
5
485-
6
Not Connected
7
Common (GND)
8
Common (GND)
