2. Installation
2.1 Installation procedure
Make sure to turn off the power before installing the 485BD.
A) Communication board 485BD (function expansion board)
B) Connector for optional equipment
C)M3 screw to fix board (2 pieces) (offered as accessories of board)
D) Top cover for board (offered as an accessory of board)
E) M3 screw to fix top cover (offered as an accessory of board)
Note: Do not remove this screw of FX1S.
• Plug the communication board A) in to the connector B).
• Fix the board to the basic unit with two M3 screws C). (Tightening
torque: 0.3 to 0.6 Nxm)
• Remove the top cover of the basic unit, and attach the top cover for
board D) instead.
During attachment, remove D)’ with a nipper, etc. so that the connector of the board is exposed.
• Fix the top cover with the M3 screw E). (Tightening torque: 0.3 to 0.6 Nxm)
• When the FX1N-5DM is used also, refer to the Hardware manual offered with the FX1S/FX1N Series
PLC main unit.
• Only one function expansion board is available for one FX1S/FX1N Series PLC basic unit. Never stack
up two or more function expansion boards. (Even if they are stacked up, they do not function at all.)
• The 485BD can be used with the FX1N-EEPROM-8L only for program