Melsec FX PLC Upgrade Migration – From Compact to Modular

by | Mar 5, 2020 | Convert PLC Applications, ENET, Extensions, FX2N, FX3U, FX3U-4DA, FX5, FX5-4DA, GT Works 3, GX Developer, GX IEC, GX Works 2, GX Works 3, High Speed I/O, iQR-Series, Melsec iQ-R, Melsec-Q, PLC, QSeries, Qseries, Software | 0 comments

Introduction

A squick set of pointers and hints for the Upgrade Migration from a compact Melsec PLC to a different Melsec PLC Options.

Traditionally – the following migration paths are automatically accomodated (For the most part);

  •      Melsec-FX is being migrated to Melsec-iQ-F (Compact to Compact)
  •      Melsec-A,Q are being migrated to Melsec-iQ-R (Modular to Modular)

​However, it is possible to move from FX to iQ-R – but with some points to note:

 

  1. Many Migration functions will NOT be automatically transferred – manual transfer or alterations (and in some cases even program engineering) will be required.
  2. The IO of the iQ-R must be applied and configured such that it complies to the IO of the FX CPU and modules.
  3. Any intelligent function cards. Modules and adaptor configuration settings – whether via the configuration tool or via PLC program – will be void and needs to removed and reconfigured.
  4. Any CPU special registers (SD) and special registers (SM) will have to be remapped manually.

In conclusion –

Only the basic PLC logic can be recycled. (this is why FX is traditionally transferred to iQ-F and not iQ-R).

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