Any public TCP modbus testing server for testing TCP modbus read holding register?

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Linux programmer

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May 1, 2021, 2:34:55 AM5/1/21
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Hi,

I installed libmodbus-3.1.6 and I am testing TCP modbus, using local TCP client server works fine, but I failed to run a TCP client to read a remote TCP modbus server registers,  the modbus_strerror(errno) was "Target device failed to respond". Are there any other public TCP modbus testing server available I can test with?

Thank you.

Kind regards,

- j

Jupiter

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May 3, 2021, 1:24:03 AM5/3/21
to libmodbus
Please ignore it.

Thank you.

Kind regards,

- j

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