Trying to interpret returned data from energy meter

Question

I'm trying to read a power meter, model Shark200 using Modbus RTU. I was already able to read it, but I couldn't interpret the returned data. How to interpret the date and value fields?

Example of the returned data:

0; 2; 6144; 3840; 17239; -26413; 17267; -27130; 17250; 31448; 16765; 23237; 16612; -9774; 16571; -17050; 2; 6144; 7680; 17237; -1267; 17267; 2169; 17249; -21791; 16745; 27777; 16681; -27502; 16550; 23033; 2; 6144; 11520; 17240; -224; 17267; -919; 17250; -1291; 16771; 13918; 16607; 26412; 16547; 23206; 2; 6145; 11520; 17238; -28002; 17267; -16499; 17250; 14486; 16771; 1838; 16612; 22630; 16541; 28452; 2; 6146; 0; 17237; -15796; 17266; -2358; 17249; 26544; 16917; 963; 16889; 15450; 16858; -447; 2; 6146; 3840; 17238; 22871; 17267; -8911; 17250; 11932; 16710; -25045; 16676; 32575; 16489; 16235; 2; 6146; 7680; 17239; -7892; 17268; 25489; 17250; -5705; 16771; -15073; 16674; 7403; 16544; -6094; 2; 6146; 11520; 17241; 13096; 17268; -12353; 17251; 29292; 16774; -296; 16676; 18266; 16540; -14520; 2; 6147; 0; 0

In the manual it says:

Answer 1

Basically each byte represents a HEX value in your Timestamp

Looking at the example

0x060717101600

is meant to be read:

YYMMDDHHMMSS in HEX format, so

YY = 06h = 06dec or (2006)
MM = 07h = 07dec (July)
DD = 17h = 23dec 
HH = 10h = 16dec
MM = 16h = 22dec
SS = 00h = 00dec

Modbus protocol works with 16bit registers so you will receive the timestamp in 6 bytes (3 registers), so your registers will look like:

YYMM = 0607h
DDHH = 1710h
MMSS = 1600h

EDIT: looks like the time is expressed in 24h format

Answer 2

There are several logs you can read. To read the desired log, you need to write the log number in position 0xC34F or DEC 49999.

My code to write:

c.WriteSingleRegister(49999, 640);

Log Number:

0 - System Events; 1 - Alarms; 2 - Historical Log 1; 3 - Historical Log 2; 4 - Historical Log 3

Answer 3

I believe there's no erros in my reading. Because even when reading other addresses that have timestamps, the returned data has the same format. Reading the manual, I found this but I dont know what it means: