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Doc# E149701 B - 23

B: Modbus Map and 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

reg] Write Retrieval Info. Set Current Index as 0.

Send: 0110 C350 0003 06 0D01 00 000000

Command:

# 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 meter, which increases retrieval speed.

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Electro Industries Shark 200T Spezifikationen Seite 183