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IM02601006E www.eaton.com B-13
IQ 150S/250S B: Modbus Map
• 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
Disable
1
Enable
• Scope: Sets the amount of data to be retrieved for each record. The default should be 0 (nor-
mal).
0
Normal
1
Timestamp Only
2
Image
• 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 deter-
mine 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 checksum, 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.
(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
Содержание IQ 150S
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