Maximum Modbus TCP IP connections

Hello HMS support,

For one of our clients we would like to connect multiple PLC which are using the modbus TCP protocol.

What is the maximum amount of Modbus IP connection that i can make with my ewon flexy 205?
In total there are +/- 15 PLC we want to connect with.

Thank you in advance.

Best regards,

Hi @Dewy,

The Maximum Modbus TCP client connections supported by the Flexy is 32.

-Tim

Thank you Tim.

The Modbus I/O server in the eWON flexy let you add 3 topics. A,B and C.

Where can I add the other 29 modbus TCP connections?

Those connections would be added at a tag level instead of the IO server. You can specify the register you’re reading, then the slave address, then the IP address of the device to read from the remaining Modbus connections

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That sounds clear to me.

Thank you for the support on such shot notice.

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You’re welcome, let me know if you have more questions on this