Klemsan Klea 320P-D - Archive (History) Records Access

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4
Quadrant
Energy Analyzer
4
Quadrant
Energy Analyzer
SECTION 4 MODBUS PROTOCOL
E.g.:
If slave ID is assigned as 157;
Request KLEA Response
Slave ID 01h Slave ID 01h
Function code 10h Function code 10h
Starting address (high) 08h Starting address (high) 08h
Starting address (Low ) 26h Starting address (Low ) 26h
Number of registers (high) 00h Number of registers (high) 00h
Number of registers (Low ) 02h Number of registers (Low ) 02h
Number of bytes 04h CRC(high) A2h
Register value (high) 00h CRC(Low ) 63h
Register value (Low ) 00h
Register value (high) 00h
Register value (Low ) 9Dh
CRC(high) D7h
CRC(Low ) F4h
4.5.3 ARCHIVE (HISTORY) RECORDS
Archive records consist of blocks having 68 parameters. Each parameter inside the
archive block is a 32 bit length variable. Archive data block is as shown in Table 4-7.
The programmer will access archive by implementing“0x14 - Read File Record”
function. “0x14 - Read File Record” function accesses the data with “file numbers”.
For Klea,
File numbers 1 – 1920 are used to access HOURLY data. File numbers 5001- 5240 are
used to access DAILY data. File numbers 10001-10036 are used to access MONTHLY
data.
• The last saved file number in the hourly data memory; can be accessed from 1360
Modbus addressed parameter (Table 4-4)
• The last saved file number in the daily data memory; can be accessed from 1362
Modbus addressed parameter (Table 4-4)
• The last saved file number in the monthly data memory; can be accessed from 1364
Modbus addressed parameter (Table 4-4)