Doc# E166703 E-23
E: Retrieving Logs
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
4. Compute #RecPerWin as (246\18)=13. Write 0x0D01 0000 0000 -> [0xC350, 3
registers] Write Retrieval Info. Set Current Index as 0.
Send: 0110 C350 0003 06 0D01 00 000000
Command:
Register Address: 0xC350
# Registers: 3, 6 bytes
Data:
Records per Window: 13. Since the window is 246 bytes, and the record
is 18 bytes, 246\18 = 13.66, which means that
13 records evenly fit into a single window. This is
234 bytes, which means later on, we only need to
read 234 bytes (117 registers) of the window to
retrieve the records.
# of Repeats: 1. We are using auto-increment (so not 0), but
not function code 0x23.
Window Status: 0 (ignore)
Record Index: 0, start at the first record.
----------------------------------------------------
Receive: 0110C3500003 (command ok)
NOTES:
• This sets up the window for retrieval; now we can start retrieving the records.
• As noted above, we compute the records per window as 246\18 = 13.66, which is
rounded to 13 records per window. This allows the minimum number of requests to
be made to the MP200 unit, which increases retrieval speed.
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