Connection to PLC 4
4-1
4. Connection to PLCConnect the FX2N-5A to the right side of a main unit, extension unit or extension block of FX0N/
FX1N/FX2N/FX2NC/FX3U/FX3UC Series PLC with an extension cable.
For connection to a basic unit or extension block of the FX2NC Series PLC, use an FX2NC-CNV-
IF.
For connection to a basic unit or extension block of the FX3UC Series PLC, use an FX2NC-CNV-
IF or FX3UC-1PS-5V.
Please check the power supply availability to determine the number of FX2N-5A blocks that can
be connected to the FX0N/FX1N/FX2N/FX2NC/FX3U/FX3UC PLCs.
A unit No. 0 to 7 is automatically assigned to each special unit or special block connected to a
PLC basic unit from the one nearest to the basic unit.*1
The data is read from and written to the FX2N-5A by FROM/TO instructions supplied by the
main unit.
*1 Because the unit No.0 is assigned to the built-in CC-Link/LT master in the FX3UC-32MT-LT,
unit numbers assigned to special extension units/blocks begins with No.1.
FX2N-5A Special function block