48
Ceiec Electric Technology
64 events in the PMC-630E, an assumption has been made that the
SOE Pointer
will never
roll over. If a
CLR SOE
is performed from the front panel or via communications, the
SOE
Pointer
will be reset to zero and then immediately incremented by one with a new ”Clear
SOE via Front Panel” or “Clear SOE via Communications” event. Therefore, any 3
rd
party
software should assume that a
CLR SOE
action has been performed if it sees the
SOE Pointer
rolling over to one or to a value that is smaller than its own pointer. In this case, the new
SOE Pointer
also indicates the number of events in the SOE Log if it is less than 64.
Otherwise, there will always be 64 events in the SOE Log.
6)
The PMC-630E has two Waveform Recorders (
WFR #1 and WFR #2
). Each
WFR
has a
Pointer that indicates its current logging position. The range of the
WFR Pointer
is between
0 and 0xFFFFFFFF. The
WFR Pointer
is incremented by one for every WFR log generated
and will roll over to 0 if its current value is 0xFFFFFFFF. A value of zero indicates that the
device does not contain any WFR Log. The total depth of
WFR #1
and
WFR #2
is 6 records.
Since the
WFR Pointers
are 32-bit values, an assumption has been made that these pointers
will never roll over. If a
Clear WFR
is performed via communications, the
WFR Pointers
will
be reset to zero.
To determine the latest WFR log location:
WFR #1's latest log location = Modulo [
WFR #1 Pointer
/
WFR #1 Depth
]
WFR #2's latest log location = Modulo [
WFR #2 Pointer
/
WFR #2 Depth
]
7)
The range of the
Energy Log Pointer
is between 0 and 0xFFFFFFFF. The pointers point to the
current logging position and are incremented by one for every new record generated and will
roll over to 0 if its current value is 0xFFFFFFFF. A value of zero indicates that the device does
not contain any Energy Log. If a
Clear Energy Log
is performed via communications, the
Energy Log Pointer
will be reset to zero.
To determine the latest Energy Log location:
Energy Log's latest log location = Modulo [
Energy Log Pointer
/
Energy Log Depth
]
8)
The PMC-630E has sixteen Data Recorders (
DR #1 / 2 /… / 16
). Each
DR
has a Pointer that
indicates its current logging position. The range of the
DR Pointer
is between 0 and
0xFFFFFFFF. The
DR Pointer
is incremented by one for every DR log generated and will roll
over to 0 if its current value is 0xFFFFFFFF. A value of zero indicates that the device does
not contain any DR Log. If a
Clear DR
is performed via communications, the
DR Pointer
will
be reset to zero.
To determine the latest DR #X log location (X=1 to 16):
DR #X's latest log location = Modulo [
DR #X Pointer
/
DR #X Depth
]
9)
The Total Memory Size of the PMC-630E is 2MB (2048kB). Used Memory = 2048kB
-
Available Memory.
5.1.2 Energy Measurements
The Energy registers have a maximum value of 999,999,999 and will roll over to zero automatically
when it is reached.
