Present State/Event Channel Definition (2 Bytes) - Electro Industries Shark 200 Installation & Operation Manual

records, calculating the difference of their timestamps will provide the duration of the
PQ event. However, neither of the two PQ records (i.e., the Out and Return) know of
each other. In order to find a particular Out and Return PQ record pair, the present
states and event channel byte arrays from all the PQ records, including and in
between the Out and Return PQ records themselves, must be used (see instructions
for Parsing a PQ Event Record on page B-59).
Here is the bitmap for both the present states and event channel byte arrays:

Present State/Event Channel Definition (2 bytes)

For example, a value of 0x0081 (00000000 10000001) in MSB indicates a Surge on
Volts A, and a sag on Volts B.
Both the present states and event channels use their bits as a series of TRUE/FALSE
flags to signify change. The present states byte array flags tell whether or not an out
event has occurred (e.g. been triggered) on a specific channel (see table above). In
normal cases, after the Out PQ record, all the succeeding PQ records up until the
Return PQ record will all have triggered present states (e.g., TRUE flags) for that
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bit
0 Volts A Surge
1 Volts B Surge
2 Volts C Surge
3 Current A Surge
4 Current B Surge
5 Current C Surge
6 Volts A Sag
7 Volts B Sag
8 Volts C Sag
9 not used
10 not used
11 not used
12 not used
13 not used
14 not used
15 Manual Trigger
B: Modbus Map and Retrieving Logs
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Doc E149701 B-62