Chapter 3 Replacement From Fx3Uc To Fx5Uc; Outline; Replacement Procedure - Mitsubishi MELSEC FX3U Series Handbook

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Replacement from FX3UC to FX5UC
3.1

Outline

FX5UC, the successor model of FX3UC, has compact and easy-to-use compatible extension modules, which makes
downsizing of various devices possible. Connect to the FX5 and FX3 extension modules with the variety of conversion
modules available.
The procedures and points for replacing to the successor model FX5UC are shown below. Please consider replacement with
the information.
Points to Consider
• The "recommended substitute models" are described for individual FX3UC and extension modules that can be replaced by
iQ-F Series models. According to usage and system configuration (connection status of the extension modules), and cases
when the I/O numbers actually used are small, other models than the described "recommended substitute models" may be
suitable for replacement.
• The recommended substitute models for extension modules and built-in batteries are described with those that can be
connected to the FX5UC CPU module.
• Contents that require special caution when replacing each models are described in "Special notes". Most recommended
substitute models have various differences in the specifications other than those in "Special notes" such as the dimension
becoming smaller than the current models. Therefore, when considering usage, please check not only the "Special notes"
but also the details of each specification for the dimension and power specifications etc., in the manual.
• Based on the above conditions, "No recommended substitute models" is described for those without a recommended
substitute model, but there are cases that can be replaced with an FX5UC system configuration according to usage and
system configuration. Check the necessary functions and features when considering the replacement with FX5UC system
configuration.
3.2

Replacement Procedure

The replacement procedure is shown below.
The successor model FX5UC is recommended when replacing from FX3UC.
1.
Selection of the models
Select the substitute models.
Page 26 Selection of Substitute Models
2.
Conversion of the program
Convert the program used in FX3UC to be able to use in FX5UC.
Page 32 Conversion of the Projects
3.
Replacement to the substitute models
Replace the PLCs.
Page 31 Replacement of the PLC
3 Replacement from FX3UC to FX5UC
3.1 Outline
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