Sigma C4 - page 62

62 C4 Manual Rev 7.5.2
these working values in SRAM have modified by Remote Mode setup commands
(See Section 7.6) they will not be the same as the non volatile EEPROM copy
unless an UP command was subsequently used to permanently store the SRAM
values to EEPROM. Upon exiting Remote mode, including by power loss, the
SRAM values are discarded. Each time Remote mode is entered a new copy of the
EEPROM setup parameter values is read into SRAM as a working copy.