Lumel P30P, Руководство пользователя

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P30P-09A 43 User's manual
5.8.2.1 Structure of the record
All data written to the internal data memory are stored as 8-byte records. Structure of the
record is presented in the table below.
Table 19
Internal memory record (8 bytes)
Registration time (4 bytes) Data archived in the float format (4 bytes)
Year - 2010 Month Day Hour Minute Second
6 bits 4 bits 5 bits 5 bits 6 bits 6 bits
Example: Example of internal memory record coding – e.g. record no. 13 on page no. 559
Record no. 13 (rec=13) on 559 page is read from registers 4553 – 4556 (unsigned short type registers –
2 bytes, 1 record covers 4 unsigned short type registers) after entering the value 559 into the register
4500. Starting register holding the record starting point can be found according to the following formula:
R
0
= 4501 + rec*4 = 4553.
Table 20
Register HEX value
4553 0x0170
4554 0xBB95
4555 0xE87C
4556 0xB942
rec = 0x0170BB95E87CB942
Data = 0xE87CB942 → (float) → 92.743958;
Table 21
Registration time = 0x0170BB95 → b1011100001011101110010101
Year + 2010 Month Day Hour Minute Second
6 bits 4 bits 5 bits 5 bits 6 bits 6 bits
0 0 0 0 0 0 0 1 0 1 1 1 0 0 0 0 1 0 1 1 1 0 1 1 1 0 0 1 0 1 0 1
0 + 2010 5 24 11 46 21
10-05-24 11:46
Rec : 2010-05-24 11:46:21 92.743958
5.8.2.2. Acquisition of archived data from the internal memory
Archived data in the internal memory can be downloaded by a memory card (optional),