Substitute Models; Selection And Replacement Of The Models; Replacement Of The Projects - Mitsubishi MELSEC FX3U Series Handbook

■Main programming languages supported
The main IEC languages are supported by GX Works3. Various different programming languages can be used within the
same project simultaneously, and the labels and devices used in each program can be shared.
1.2

Substitute Models

The recommended substitute models (MELSEC iQ-F Series) introduced in this manual are general substitute models
considered from the number of input/output points, program capacity, product and input/output terminal type (terminal block/
connector etc.). According to usage and service condition, other substitute models different from those described may be
suitable. Please plan replacement to a substitute model with the following procedures.
Procedure to Replace to Substitute Model
1.
Investigation of the existing system
List the installed places, number of units, and the type of PLCs. Investigate the programs and wiring diagram etc.
2.
Diagnosis of the facilities
Make a diagnosis of the facility's importance and duration of service, usage environment etc., and set priorities and plan the
replacement procedure.
3.
Selection of the models
Select the replacement models according to the number of input/output points and the availability of extension modules etc.
Select from the latest MELSEC iQ-F Series.
4.
Reuse of the program
Consider either to reuse the program of the existing system, or create new program.
When reusing, convert and correct the read out program to the new PLC's format.
5.
Replacement of the models
Arrange the selected models and replace on-site.
6.
Debug of the system
Test the system after replacement and adjust bugs and timing.
7.
Completion
After debugging, migrate to live operation.

Selection and Replacement of the Models

The CPU modules and extension modules of FX3U/FX3UC can be replaced by selecting models from the successor models
FX5U/FX5UC that match the system.
• FX3U
Selection of
Page 18 Replacement from FX3U to FX5U
the models
• FX3UC
Selection of
Page 25 Replacement from FX3UC to FX5UC
the models

Replacement of the Projects

FX3U/FX3UC projects created by GX Works2 can be converted to MELSEC iQ-F projects by GX Works3. (GX Works2 must
also be installed)
Replacement of the projects
Page 32 Conversion of the Projects
1 Outline
17
1.2 Substitute Models
1