pikapython/examples/modbus/rtu_master.py

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import modbus
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mb = modbus.ModBusRTU(128, 128)
mb.setSlave(1)
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send_buff = mb.serializeReadRegisters(0, 10)
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print(send_buff)
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host_regists = mb.deserializeReadRegisters(
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b'\x01\x03\x14\x00\x00\x00\x00\x04\xD2\x00\x00\x00\x00\x00\x7B\x00\x00\x00\x00\x00\x00\x00\x00\xE5\x0B'
)
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print(host_regists)
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mb.serializeReadInputRegisters(0, 2)
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mb.deserializeReadInputRegisters(b'\x01\x04\x04\x00\x00\x08\xE6\x7D\xCE')
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send_buff = mb.serializeWriteRegister(0, 0x1234)
print(send_buff)
send_buff = mb.serializeWriteBits(0, [1, 1, 1, 0, 1, 0, 1, 0])
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print(send_buff)