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read function 10 for Modbus RTU

Forum: Engineering 🇬🇧

Created: 2017-08-08

Updated: 2017-08-08

c.man - 2017-08-08

HI,
I can't read the function 10 for Modbus RTU. Is not implemented in Codesys software.
Why ?
How I can to do ?

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e.kislov - 2017-08-08

What do you mean?
Function 0x10 - Write Multiple Registers - it's only for writing.
You need to use function 0x03 or 0x04 for reading.

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c.man - 2017-08-08

I must setting baud rate and address for my device

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e.kislov - 2017-08-08

c.man hat geschrieben:
I must setting baud rate and address for my device

I think it's not possible to set COM-settings for slave device over Modbus. Only manual.

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