Precautions Regarding The Hardware - Mitsubishi MELSEC FX3U Series Handbook

Extension device
Device name Model name
Option FX2NC-CNV-IF
FX3UC-1PS-5V
FX3U-FLROM-16
FX3U-FLROM-64
FX3U-FLROM-64L
FX3U-FLROM-1M
FX-30P
FX0N-30EC
FX0N-65EC
FX2N-CNV-BC
*1 It is possible to connect to the system of FX5UC CPU module by connecting a bus conversion module (FX5-CNV-BUSC or FX5-CNV-
BUS).
*2 FX5-CCL-MS can be used as a master station.
Extension devices that can be reused when the CPU module is replaced to FX5UC
The following extension devices can be used by connecting a bus conversion module (FX5-CNV-BUSC or FX5-CNV-BUS)
even when the CPU module is replaced from the FX3UC to FX5UC.
■Extension devices that can be used even when the CPU module is replaced from the FX3UC
to FX5UC
Analog Positioning
FX3U-4AD FX3U-1PG
FX3U-4DA
FX3U-4LC
*1 The terminal module can be used without connecting a bus conversion module.
*2 It is necessary to set the parameter with the PLC program.
Battery
The battery (FX3U-32BL) used in FX3UC can also be used with FX5UC.

Precautions Regarding the Hardware

Comparison of FX3UC and FX5UC and Precautions for Replacement
The following list shows precautions of the hardware. Check details in the manuals of each models when replacing.
■Difference and precautions regarding the main hardware of FX3UC and FX5UC
Item
Extension of FX2N, FX2NC, FX3U,
and FX3UC
Input hardware filter
(When the digital filter is 0)
• High-speed counter
• Input interruption function
• Pulse catch function
Input signal current
Recommended Substitute Models
Model name
FX5-CNV-IFC
FX5-C1PS-5V
No recommended substitute models
No recommended substitute models
No recommended substitute models
No recommended substitute models
No recommended substitute models
FX5-30EC
FX5-65EC
FX5-CNV-BC
High-speed
counter
FX3U-2HC
Difference
FX3UC FX5UC
Extension possible Extension is possible only for
certain modules.
FX5-CNV-BUSC or FX5-CNV-
BUS is required for extension.
X0 to X5 are 5μs. There is no 0 setting.
X6 to X7 are 50μs.
X10 to X17 are 200μs.
X0 to X5 are 6 mA. X0 to X17 are 5.3 mA.
X6 to X7 are 7 mA. X20 and subsequent are 4 mA.
X10 and subsequent are 5 mA.
Special notes
Substituted by an SD card.
Substituted by an SD card.
Substituted by an SD card.
Substituted by an SD card.
Network Terminal module
*2
FX3U-16CCL-M FX-16E-TB
FX3U-64CCL FX-32E-TB
*2
FX3U-128ASL-M FX-16EX-A1-TB
FX-16EYR-TB
FX-16EYS-TB
FX-16EYT-TB
Precautions
Connection is not possible for some intelligent
modules of FX3U.
There is no 0 setting, but no setting can be
selected. (no filter)
Noises that were not detected by FX3UC may
possibly be captured as an input. If necessary,
take measures against external noises.
The input signal current has been lowered, so it
is necessary to check the specification of the
external devices when replacing.
3 Replacement from FX3UC to FX5UC
3.3 Selection of Substitute Models
*1
FX-16E-TB/UL
FX-32E-TB/UL
FX-16EYR-ES-TB/UL
FX-16EYS-ES-TB/UL
FX-16EYT-ES-TB/UL
FX-16EYT-ESS-TB/UL
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