Records Per Window - Electro Industries Shark 200 Installation & Operation Manual

• Enable: This value sets if a log retrieval session is engaged (locked for retrieval) or
disengaged (unlocked, read for another to engage). Write this value with 1(enable)
to begin log retrieval. Write this value with 0(disable) to end log retrieval.
0
1
• Scope: Sets the amount of data to be retrieved for each record. The default should
be 0 (normal).
0
1
2
• Normal [0]: The default record. Contains a 6-byte timestamp at the beginning,
then N data bytes for the record data.
• Timestamp [1]: The record only contains the 6-byte timestamp. This is most
useful to determine a range of available data for non-interval based logs, such
as Alarms and System Events.
• Image [2]: The full record, as it is stored in memory. Contains a 2-byte check-
sum, 4-byte sequence number, 6-byte timestamp, and then N data bytes for the
record data.
• Records Per Window: The number of records that fit evenly into a window. This
value is set-able, as less than a full window may be used. This number tells the
retrieving program how many records to expect to find in the window.
NOTE: This must be set to 1 for waveform retrieval.
(RecPerWindow x RecSize) = #bytes used in the window.
This value should be ((123 x 2) \ recSize), rounded down.
For example, with a record size of 30, the RecPerWindow = ((123 x 2) \ 30) = 8.2
~= 8
Electro Industries/GaugeTech
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
The Leader In Power Monitoring and Smart Grid Solutions
B: Modbus Map and Retrieving Logs
Disable
Enable
Normal
Timestamp Only
Image
#
Doc E149701 B-14