Thermo Scientific TSX Series Installation And Operation Manual page 28

Connect via Passcode
This option displays a code that must be entered to connect to InstrumentConnect.
Figure 48. Connect via 1-Time Passcode Screen
Note: When using the InstrumentConnect web and mobile
app, ensure you are in the correct regional environment. 
If you are in China, you should select the China region. 
Refer Connectivity Requirements for details.
If the connection is successful via either of the two methods,
a success message is displayed.
If the connection is unsuccessful, an error message is
displayed. After 5 seconds, the interface will return to the
previous screen. Check the network status and any entered
passwords, etc. and repeat the previous steps to establish a
successful unit connection.
Refer Connectivity Troubleshooting.
Remote Serial
The remote serial tab allows for a MODBUS ASCII protocol to
interface to the unit. Registers that are currently accessible
through this protocol are shown in Appendix D: Modbus
ASCII Parameter Table.
Figure 49. Remote Serial
Ultra Low Temperature Freezers Operation | 23