It is not possible, to read the checksum, as it is displayed in the GUI, e.g. CCCC.
However in the configurations folder, the file safety.conf and the installation file e.g. default.installation containg the safety parameters, as well as a checksum.
However this checksum is not consistent with the 4-digit alphanumeric checksum, as this is solely numeric, e.g. crc = 2588156642.
The value in the installation represents the safety configuration for that specific installation (and is compressed), whereas the value in safety.conf represents the currently applied settings, and is non-compressed.
Please note, that reading this value will not be safety rated.
Also note, that if the value in safety.conf is not corresponding to the values actually loaded in the Safety Control Board, this will cause an error, reporting a conflict between actual and to be applied safety settings.