Dave W.

FX5U Modbus-TCP Server (Slave)

8 posts in this topic

Hello everybody.
I need a solution for Modbus-TCP server on the PLC.

With the FX3U it would work with the FX3U-ENET module.
The internal interface of the FX5U should actually be able to work with the library of the FX3U (FX3GModbusTCPServer_GW2_V100) or not?
Because a socket connection is now possible.

I would be happy about suggestions.

Dave

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I was recommended to continue to use FX3U and the FX3U-Enet P502 module when connected as Modbus TCP server.

Was told that there's no other work around for this at the moment.

Don't remember when they estimated an implementation of the Modbus TCP server functionality in the FX5U, hopefully in a near future.

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Thanks for your fast reply.

The FX3U is too old-fashioned for me.

Do you know whether the FX3U-ENET P502 works together with the FX5U?

There should be an adapter for using with the old modules, as far as I know. The new, fast bus becomes then obsolete but nevertheless ..

Dave

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I know there is an adapter, but I'm not sure it will support the FX3U-ENET module.

I'm (almost) pretty sure you can use CC-link modules from the FX3 family, but not the ENET.

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I have a solution from Mitsubishi.

It looks like the on board Ethernet is compatible with System-Q and L-Series. In the attachment you find a demo project for GX Works3 which is based on the library "LQnUDEModbusTCP_GW2_V110". This project works fine with my FX5U. So Modbus-TCP server and client is possible with FX5U without big  effort.

FX5ModbusTCP_GW3_V100.gx3

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Update: Modbus-TCP Server functionality is now possible without any FB. (Firmware 1.60 an above).

All the necessary settings are now located in the parameter section.

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What do you mean by your message?

With the newer Firmware for FX5U, Modbus-TCP Server is natively available.

To download the demo project above, you have to be registered on this site.

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