P30P-09A 42 User's manual
Additionally, P30P-XX1XXXXXXX version is equipped with SD/SDHC card slot, allowing the
archive data as files on the external SD/SDHC card.
P30P-XX2XXXXXX version is equipped with 8GB internal file system memory (memory size
can be increased by manufacturer or on special order) storing the data automatically rewritten from the
internal memory. The files can be downloaded via Ethernet using FTP.
Caution:
Changing the menu parameter value
Archive Arch.Val
→
will result
in erasing the internal memory archive!!!
5.8.2 Internal memory
Transducer internal memory is divided into 8192 pages. Every memory page can
accommodate up to 66 data records. Records within one page begin from the beginning of the page and
fill the entire page space. Every memory page is 528 bytes long. Memory is divided into two areas: first
8096 pages are the basic archive memory, while the remaining 96 pages are the reserve archive that is
used only during rewriting memory contents to the SD/SDHC card (total memory is 8096*528B +
96*528B = 4275312 bytes).
The starting point of the archived data is marked by the number of the page containing the first
archive record and the starting byte determining page byte the first record starts from. The ending point
of the archive is likewise marked by the number of the page containing the last archive record on that
page and the first byte of the subsequent archive record to be written.
Deletion of the internal archive memory contents is done by assigning the archive end
parameters to the archive start. This allows to retrieve memory contents in case archive is deleted.
Data in the internal archive memory are stored as 8-byte records. Current memory fill status
can be displayed on LCD after setting the lower display line to show the unit and internal memory fill
indicator. Table 18 describes the internal memory fill indicator.
Table 18
Symbol
Internal memory fill
percentage
8
7
.5
..
.1
0
0
%
7
5
..
.8
7
.5
%
6
2
.5
..
.7
5
%
5
0
..
.6
2
.5
%
3
7
.5
..
.5
0
%
2
5
..
.3
7
.5
%
1
2
.5
..
.2
5
%
0
..
.1
2
.5
%