Eaton IQ 150S, User & Installation Manual

Page: 180 / 234

IM02601006E www.eaton.com B-26
IQ 150S/250S B: Modbus Map
Window Status: 0 (ignore)
Record Index: 0x0D = 13, start at the 14th record.
----------------------------------------------------
Receive
: 0110C3510002 (command ok)
NOTES
:
• This step manually sets the record index, and is primarily used when an out-of-order record
index is returned on a read (step 6).
• The example assumes that the second window retrieval failed somehow, and we need to
recover by requesting the records starting at index 13 again.
8. For each record in the retrieved window, copy and save the data for later interpretation.
9. Increment Current Index by RecordsPerWindow.
NOTES
:
• This is the step that determines how much more of the log we need to retrieve.
• On the first N passes, Records Per Window should be 13 (as computed in step 4), and the cur-
rent index should be a multiple of that (0, 13, 26, . . .). This amount will decrease when we
reach the end (see step 10).
• If the current index is greater than or equal to the number of records (in this case 100), then all
records have been retrieved; go to step 12. Otherwise, go to step 10 to check if we are nearing
the end of the records.
10. If number records - current index < RecordsPerWindow, decrease to match.
NOTES
:
• Here we bounds-check the current index, so we don't exceed the records available.
• If the number of remaining records (#records - current index) is less than the Records per Win-
dow, then the next window is the last, and contains less than a full window of records. Make
records per window equal to remaining records (#records-current index). In this example, this