Advantech Adam 4000 Series User Manual page 361

5. Connect computer to the ADAM I/O module using a RS-232 to RS-485, or
USB to RS-485 converter.
6. Use software to configure settings
According to user's application to set parameter like as address, baudrate,
data format, checksum, protocol...and so on.
Changing Baud rate and Checksum
Refer to Chapter 2 section 2.3.
Changing the protocol from ADAM ASCII to Modbus
Some ADAM-4000 modules support both ADAM ASCII and Modbus
protocols, and the factory default setting of these modules is ADAM
ASCII protocol. If you would like to configure the modules to Modbus
protocol, please refer to Appendix H which describes how to change the
protocol in ADAM utility.
7. Save changes and reset power on ADAM module for settings to take effect.
347 ADAM-4000 Series User Manual