For read/write errors in RTU mode, return the actual I/O error instead of MODBUS_EXCEPTIONS[EXCEPTION_GATEWAY_TARGET_DEVICE_FAILED_TO_RESPOND] which can be misleading
For read/write errors in RTU mode, return the actual I/O error instead of MODBUS_EXCEPTIONS[EXCEPTION_GATEWAY_TARGET_DEVICE_FAILED_TO_RESPOND] which can be misleading

dpapathanasiou/go-modbus,ololoshka2871/go-modbus