Factory Automation

MELSEC-F series I/O Extension

FX series I/O extension devices are divided into "extension blocks" and "powered extension units".
"Powered extension units" have built-in power supply and also extend I/O at the same time.
"Extension blocks" adjust the I/O of the main unit or powered extension units in 8 point or 16 point units.

Extension units

Powered extension units are I/O extension devices with built-in power supply.
Like with the main unit, various I/O devices and special devices can be connected after a powered extension unit.

Model Total number
of points
Number of input/output points
Input/output type
Applicable FX PLC
Input Output FX
3S
FX
3G
FX
3U
FX
3GC
FX
3UC
AC Power Type
FX2N-32ER

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

32 points 16 points 24 V DC
(sink)
16 points Relay × × ×
FX2N-32ER-ES/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24 V DC
(sink/
source)
FX2N-32ES

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24 V DC
(sink)
Triac
FX2N-32ET

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24 V DC
(sink)
Transistor
(sink)
FX2N-32ET-ESS/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24 V DC
(sink/
source)
Transistor
(source)
FX2N-48ER

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

48 points 24 points 24 V DC
(sink)
24 points Relay × × ×
FX2N-48ER-ES/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24V DC
(sink/
source)
FX2N-48ET

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24 V DC
(sink)
Transistor
(sink)
FX2N-48ET-ESS/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24 V DC
(sink/
source)
Transistor
(source)
FX2N-48ER-UA1/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

48 points 24 points 100 V AC 24 points Relay × × ×
DC Power Type
FX2N-48ER-D

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

48 points 24 points 24 V DC
(sink)
24 points Relay × × ×
FX2N-48ER-DS

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24 V DC
(sink/
source)
FX2N-48ET-D

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24 V DC
(sink)
Transistor
(sink)
FX2N-48ET-DSS

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24 V DC
(sink/
source)
Transistor
(source)

Regarding connection cable
A connection cable (length: 55 mm), used to connect to the the right side of the device in front of the powered extension unit, is included with the powered extension unit. To extend the distance of the connection, please use the optional "extension cable".

Function expansion board

The expansion board is designed to add the input and output terminal whose points are small to FX3S or FX3G PLCs. The board can be built in the PLC.

Model Total
number
of
points
Number of input/output points
Input/output type
Applicable FX PLC
Input Output FX
3S
FX
3G
FX
3U
FX
3GC
FX
3UC
FX3G-4EX-BD 4 points 4 points 24 V DC
(sink/
source)
- - *1

Max.
1 unit
*2

Max.
1 unit
× × ×
FX3G-2EYT-BD 2 points - - 2 points Transistor
(sink/
source)
*1

Max.
1 unit
*2

Max.
1 unit
× × ×
  • *1 Supported by FX3S ver. 1.10 and later.
  • *2 Supported by FX3G ver. 2.20 and later.

Extension blocks

Extension block is an I/O extension device that receives power from the main unit or powered extension unit.
It can be connected in 8 point or 16 point units. The connectable number of points is determined by each main unit or powered extension unit.

Model Total number
of points
Number of input/output points
Input/output type
Applicable FX PLC
Input Output FX
3S
FX
3G
FX
3U
FX
3GC
FX
3UC
Input/output extension blocks
FX2N-8ER

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

8 points 4 points
(8 devices
are occupied.)
24 V DC
(sink)
4 points
(8 devices
are occupied.)
Relay × *1
*2

*1
*2

FX2N-8ER-ES/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24V DC
(sink/
source)
FX2N-8EX

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

8 points 24 V DC
(sink)
- -
FX2N-8EX-ES/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24V DC
(sink/
source)
FX2N-8EX-UA1/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

100 V AC
FX2N-16EX

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

16 points 16 points 24 V DC
(sink)
× *1
*2

*1
*2

FX2N-16EX-ES/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24 V DC
(sink/
source)
FX2N-16EX-C
Connector input

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24 V DC
(sink)
FX2N-16EXL-C
Connector input

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

5 V DC
Output extension blocks
FX2N-8EYR

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

8 points - - 8 points Relay × *1
*2

*1
*2

FX2N-8EYR-ES/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

FX2N-8EYR-S-ES/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

Relay
(8 points/common)
FX2N-8EYT

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

Transistor
(sink)
FX2N-8EYT-H

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

FX2N-8EYT-ESS/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

Transistor
(source)
FX2N-16EYR

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

16 points 16 points Relay × *1
*2

*1
*2

FX2N-16EYR-ES/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

FX2N-16EYS

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

Triac
FX2N-16EYT

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

Transistor
(sink)
FX2N-16EYT-ESS/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

Transistor
(source)
FX2N-16EYT-C
Connector output

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

Transistor
(sink)
  • *1 For connection to FX3GC or FX3UC, FX2NC-CNV-IF or FX3UC-1PS-5V is required.
  • *2 Depending on the model name of the main unit, I/O extension device connection may or may not be allowed. For details, refer to the manual of the main unit.

Regarding connection cable
A connection cable, used to connect to the right side of the device in front of the extension block, is included with the extension block.
To extend the distance of the connection, please use the optional "extension cable (FX0N-30EC/FX0N-65EC)" and "connector conversion adapter (FX2N-CNV-BD)".

Extension block for connector type main unit (FX3GC, FX3UC)

These I/O extension devices can be directly connected to FX1NC, FX3GC, FX2NC, FX3UC PLCs.
They can be compactly extended because connection cables are not needed.

Model Total number
of points
Number of input/output points
Input/output type
Applicable FX PLC
Input Output FX
3S
FX
3G
FX
3U
FX
3GC
FX
3UC
Input extension blocks
FX2NC-16EX-T
Terminal block input

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

16 points 16 points 24 V DC
(sink)
- - × × × *
*
FX2NC-16EX-T-DS
Terminal block input

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24V DC
(sink/
source)
FX2NC-16EX

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24V DC
(sink)
FX2NC-16EX-DS

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24V DC
(sink/
source)
FX2NC-16EX-D/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24V DC
(sink)
FX2NC-32EX

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

32 points 32 points 24 V DC
(sink)
FX2NC-32EX-DS

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24V DC
(sink/
source)
FX2NC-32EX-D/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

24V DC
(sink)
Output extension blocks
FX2NC-16EYR-T
Terminal block Output

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

16 points - - 16 points Relay × × × *
*
FX2NC-16EYR-T-DS
Terminal block output

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

FX2NC-16EYT

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

Transistor
(sink)
FX2NC-16EYT-DSS

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

Transistor
(source)
FX2NC-16EYT-D/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

Transistor
(sink)
FX2NC-32EYT

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

32 points 32 points Transistor
(sink)
FX2NC-32EYT-DSS

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

Transistor
(source)
FX2NC-32EYT-D/UL

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

Transistor
(sink)
Input/output extension blocks
FX2NC-64ET

Order acceptance:
March, 2028
Production discontinuation:
September, 2028

64 points 32 points 24 V DC
(sink)
32 points Transistor
(sink)
× × × *
*
  • * Depending on the model name of the main unit, I/O extension device connection may or may not be allowed. For details, refer to the manual of the main unit.