26
Curtis 1030 Acuity Manual,
Rev. C
8 — DEVICE MONITOR OBJECTS
The data recorded per the events in Bytes 42 – 51 is as follows.
BATTERY CYCLE EVENT
BYTE DESCRIPTION
END OF CHARGE
POWER DOWN
byte 42 Battery cycle number (LSB).
EoC_V_LSB PowerDown_sec
byte 43 Battery cycle number (MSB).
EoC_V_MSB
_min
byte 44 Total Ah charge for battery cycle (LSB).
EoC_I_LSB
_hour
byte 45 Total Ah charge for battery cycle (MSB).
EoC_I_MSB PowerDown_Day
byte 46 Total Ah discharge for battery cycle (LSB).
[not used]
_Month
byte 47 Total Ah discharge for battery cycle (MSB). [not used]
_Year
byte 48 Max temperature for battery cycle.
[not used]
[not used]
byte 49 Min temperature for battery cycle.
[not used]
[not used]
byte 50 5Hr rate capacity available (LSB).
[not used]
[not used]
byte 51 5Hr rate capacity available (MSB).
[not used]
[not used]
Retrieving historical records
Historical records are generated for four different events (see page 23). To find
the precise historical data location where the data cycle has been recorded, use
the following steps. This way data for any cycle number can be retrieved without
a search through all the historical records. The retrieval starts with a request
to 5302h to find the record number. (See also, chart at bottom of page 23.)
The Acuity response to this request is as follows.
INDEX SUB-INDEX ACCESS
BYTE 5
BYTE 6
BYTE 7
BYTE 8
DESCRIPTION
5302h
00h
RO
Cycle number Cycle number
0
0
Read historical record.
(LSB)
(MSB)
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Byte 8
40h 02h 53h 00h
Historical
Historical
0 0
Record
Record
Number
Number
(LSB)
(MSB)
After the historic record number is received, specific details for that record can
be retrieved, using the SDO object Historic Record Request (5300h), along
with the appropriate sub-index.
INDEX SUB-INDEX ACCESS
BYTE 5
BYTE 6
BYTE 7
BYTE 8
DESCRIPTION
5300h 00..15h
RO Record number Record number
0
0
Read historical record.
(LSB)
(MSB)
