It seems that the parser is incorrectly extracting data from the stream. I think the mismatch of the contents of the fields breaks the processing of the incoming data stream from the unit.
Addition: when connecting the unit to the server, the SDATE command comes, for example, SDATE = 11 11 19 13 41 3 however, actually the local time is three hours later (11 11 19 16 41 3), and this time also does not match with UTC (+7).