A short discussion on the available communication protocols related to the Melsec iQ-F FX5U PLC CPU.
It stands to reason that this CPU (just like any other CPU) supports a finite number, predefined communication protocols. More details are being given here.
Ethernet and Serial Based Communication Standards and the Communication Protocols applicable – CPU Built-in;
The FX5U PLC CPU – does support some built-in communication protocols – accommodated by its two communication ports, one being ethernet (RJ-45) and the other being serial (Terminals).
In connection to Melsec-iQ-F FX5U PLC built-in communication protocols – the following is applicable:
- Ethernet standard based communication. The recommended communication protocol would be CC-Link IE Field Basic, Modbus TCP, SLMP Communication (typically used for SCADA connection) and MC Protocol (Melsec Communication Protocol)
- Serial based communication (RS-422\RS-485 standards). The recommended communication protocol would be Modbus RTU and MC Protocol (Melsec Communication Protocol) (or inverter comms if it was a serial connection to FREQROL VFD).
More information can be attained as follows:
Ethernet and Serial Based Communication Standards and the Communication Protocols applicable – Expansion Options;
However, additional communication protocols may be required for interfacing with a foreign\3rd party device. For this, the Melsec iQ-F FX5 CPU can accommodate Expansion Options, which are add-on hardware components.
Hardware needs to be added in the forms of modules, boards, and adaptors (per THIS selection tool)
more information HERE)
It must be pointed out that the Melsec iQ-F does not support:
- HART over 4-20mA Communication Protocol
- I/O Link Communication Protocol