8 Connectivity and Information Commands
Logging in with the U 0 command unlocks this very port to be used for communication.
Example: If the external controller sends the U 0 command to the CU RS232 port, it will
unlock the RS232 port for communication and control (the USB and Ethernet ports will
be locked for communication/control). Successive logins on another port, e.g. USB, will
unlock the communication for the USB port. Hence, it will lock the former communication
port (in this example the RS232 port).
A new login is required after CU power up, CU reset, when changing to a different
communication port, or after all ports are locked by the U B command.
The access to the Quinta Control Unit can be password protected. The same password
is used throughout the Quinta System: PC-Software, CU access, web server access.
Thus, if the system is password protected, the login requires the correct system wide
password. Furthermore the password can be changed by protocol after login.
Examples (for V command, see chapter 2.4)
Get version number without login
Get version number with proper login
<CR><LF>
CUFW
V3.0.00<CR><LF>
>