External Dimensions and Part Names
Product RS-485 communication expansion board FX3U-485-BD
Included
items
M3 tapping screws for installation: 2 pcs.
Station number labels for linking
Installation Manual (This manual)
Communication type Function
N:N network Data transfer connecting up to eight FX Series PLCs.
Parallel link
Data transfer between two PLCs relationship specifying
master/slave station.
Computer link
Data transfer between PLC and computer (specified as the
master station) via dedicated protocol.
Non-protocol
communication
Serial communication between PLC and RS-485 device via
non-protocol.
Inverter communication
Controlling Mitsubishi's FREQROL inverter using Inverter
communication instructions.
19.3
RD
SD
46.1 (1.82")
53.5 (2.11")
62.7 (2.47") When the port cover for
connecting a special adapter
is removed
[1]Mounting holes (2-φ3.2)
[2]RD LED:Lighting while receiving data (LED color: red)
[3]SD LED:Lighting while sending data (LED color: red)
[4]Port for connecting RS-232C equipment 
(9-Pin D-Sub, male)
[5]Hole for connector fixing screw (#4-40UNC)
[6]Port to connect with a PLC
[7]Cover on the port for connecting a special ad