Omega Vehicle Security OMP-MODL - Manual (Page 258)

11.. . A PPENDIX A: M ASTER I CON F ILE R EFERENCE
U SING T HE OMP-MODL 11-96
Memory: Three selections are available for utilization of the OMP-MODL memory:
Log to Full Memory and STOP Processing - if selected, the OMP-MODL
will log data until memory is filled, then stop execution of the Program Net
and go into a low power sleep mode.
NOTE: If MILLISECOND Sample Clock Resolution is selected (see below)
logging sessions must be limited to a maximum length of 40 days.
Log to Full Memory and CONTINUE Processing - if selected, the OMP-
MODL will log data until memory is filled, then continue the execution of
the Program Net excluding the storage of data to memory. This mode
allows all of the non-Memory icons in the Program Net to continue
operation providing continued Alarm, Probe Point, etc access.
NOTE: If MILLISECOND Sample Clock Resolution is selected (see below)
memory must be filled before a maximum of 40 days after Enabling the
OMP-MODL . Processing will continue after the 40 day limitation.
Rotary Memory - if selected, the OMP-MODL will log data until the
memory is filled, then begin overwriting the oldest sample in memory.
Processing of the complete Program Net will continue as normal.
NOTE: If MILLISECOND Sample Clock Resolution is selected (see below)
logging sessions must be limited to a maximum length of 40 days.
Sample Clock Resolution: Two options are available for selecting the time
resolution of the OMP-MODL.
SECONDS - This mode should be used for all Program Nets that have
Sample Rate Clocks set at 1 second or slower. In this mode, the OMP-
MODL `sleeps’ in a low-power mode during times of inactivity, providing
extended battery life. Sample Rate Clocks can be set as fast as 1 second.
MILLISECONDS - This mode must be used if any Sample Rate Clocks will
be set at faster than 1 second rates. In this mode, the OMP-MODL can
resolve time increments as small as 1/1000 of a second. NOTE: Use of the
millisecond mode will result in higher power consumption as the OMP-
MODL microprocessor is continually operating. Depending on the Program
Net, the energy consumption in this mode may be approximately 10 to 15
times higher than in the SECOND mode.
NOTE: In MILLISECOND Mode, logging sessions must be
limited to a maximum length of 40 days. This limitation
holds for both Rotary and Log to Full Memory modes.
This 40 day limit is due to a maximum time count that the
OMP-MODL can internally store at the faster clock rate.
For sessions longer than 40 days, utilize the SECOND
mode.
Recalibration Period: The OMP-MODL performs various self-calibrations during
execution of a Program Net. The User can specify the frequency of these
calibrations. If a 0 is entered for the period, a recalibration will be
performed at the start of each Program Net execution. If speed is not of
concern, entering 0 for each of the recalibration periods will result in
optimum performance.
ADC - the analog to digital converter used within the OMP-MODL and
much of the analog circuitry incorporated into Interface Modules can drift
over time and temperature fluctuations. By performing a recalibration,
most of this drift can be nulled. Specify the period in seconds between
recalibrations.