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• No new records are recorded to the log during the log retrieval process.
a) Data logging settings
Now set the data log 1 according to the assumptions:
1. Set the data log with VAN, VBN, VCN, here we should set their modbus
address 0x4002,0x4003,0x4004,0x4005,0x4006 and 0x4007 to 0x1102, 0x1103,
0x1104, 0x1105, 0x1106 and 0x1107. And the discripter is 2,so set the 0x0202
and 0x0200 to 0x1177 and 0x1178.
2. The register is 6 and sector is 10, so we set 0x060A to 0x1100.
3. The interval is 1min , so set the 0x0001 to 0x1101.
4. The logging timer function is disabled, so set the 0 to 0x11B9.
b) Log Retrieval Procedure
The following procedure documents how to retrieve a single log from the oldest
record to the newest record.
1. Compute the number of records per window, as follows:
RecordsPerWindow = (246 \ RecordSize)=246\24=10.
2. Write the Records per window and Record offset, in this example set the
0x0A0B and 0x0000 to 0x6001d and 0x6002.
This step tells the meter what data to return in the window.
3. Read the record window status from 0x6001.
• If the Window Status is 0xFF, go to step 2.
• If the Window Status is 0x0B, Read the data window.
4. Read the data window and compute next Expected Record oset.
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