Accessing a modbus device connected to RTE port from Node-RED

[tad]

Dear Armin,

I need you help, please.

I'd like to separate network segments for IT and fieldbus.
For this, using netPI RTE 3, I created a container of 'hilschernetpi/netpi-netx-ethernet-lan'.
A modbus device is now connected to the fieldbus segment (RTE port).

Then, I want to output data to the modbus device using 'Modbus-Write' node with Node-RED.

But, I think 'Modbus-Write' node recognizes that TCP is the standard IT port.
Because Modbus communication doesn't start at all.

As a test, I confirmed that Modbus communication can be done properly when the modbus device is connected to the standard IT port.

Therefore, my question is:
Is it possible to make 'Modbus-Write' node recognize RTE port?

Thank you very much for your support.
Best regards,