Mitsubishi

The Flexy embeds two IO servers dedicated to Mitsubishi PLCs:

MITSUFX: this IO server allows the Flexy to poll tags on a MITSUBISHI FX series PLC using its serial RS-422 programming connector.
MELSEC: this IO server allows the Flexy to poll tags on a MITSUBISHI Q series PLC using the MC protocol on the Ethernet interface. It also supports the polling of the FX3U, FX5U and A series over Ethernet protocol.

A summary of the existing situation can be found in the table below:

PLC Model	Ethernet	Serial	eWON IO Server	Comments
FX series (except FX3U & FX5U)	✘	✔	MITSUFX	Polling on serial only.
Q series A series FX3U series FX5U series	✔	✔	MELSEC	Polling on Ethernet only.

The remote maintenance functionality is not provided by either IO server. To perform a remote maintenance, the Ethernet routing feature or VCOM feature (serial) of the Flexy must be used.