MODBUS TCP/IP communication reading register blocks

[TomaszDEBICA]

Hello,

Congratulations on the good work.

I have a question.
How can I configure a communication channel in MODBUS TCP/IP?
I have a device that supports 50 registers in one query.
In the application, I need to read 130 registers from the device in 3 queries.
How can I configure the communication channel to separate the queries.

Thank you for your answer.

[unocelli]

Hi, I think that you can enable fragmented or define 3 devices

[TomaszDEBICA]

Hi,

After enabling the FRAGMENTED option, data above 50 registers is still not read. And a request to a device above 50 registers blocks communication.

I also tried to add a second communication channel, but the device from which I read variables has only one socket.

[unocelli]

I'm not sure if it work but you can try to set the TOKEN_LIMIT to 40 in FUXA\server\runtime\devices\modbus\index.js
line 11: const TOKEN_LIMIT = 40; // 100

[TomaszDEBICA]

Ok I will try.

Thanks for your help