PC----USB to RS232----Serial port----M511----Ethernet port-----PC

Default parameter:

If M511 connect PC with network line directly, set the PC in the same network segment with M511,

If M511 connect PC with switchboard, set the M511 IP type: DHCP/Auto IP

When M511 work at MODBUS_RTU_SLAVE mode

Set modbus poll.exe connect IP:172.16.11.162   port: 502

Set modbus slave.exe connect serial port

And the data can transmission