10. Programming With Programming-Menus
10.2 Data Memory
The basic information with regard to data storage in ALMEMO
®
devices is gi-
ven in the manual section 6.9. The internal data memory of the ALMEMO
2690-8 is a 512kByte EEPROM with capacity sufficient for 64.000 to 100.000
measured values (depending on the channel number). In the event of a failure
in the supply voltage the measured data is retained. The EEPROM can be con-
figured either as linear memory or ring memory (s. man. 6.10.13.2).
10.2.1 Data Acquisition
Most of the parameters, which are required for the
recording
of measuring
data, have already been described in the menu
Times - Cycles
(s. 10.1).
1. Time and date
2. Cycle, storage activation, sleep mode
3. Conversion rate with storage activation
4. Time of start and end of a measurement
The menu
Recording to memory
can be used
for an especially simple recording to memory.
Additionally, there are extra assistant menus
for the various possibilities to start and stop
the measurement! (s. 10.2.3)
Attention:
One sensor configuration is only
stored during the first start, additional sensors
are completed at the next start
.
If other sen-
sors are connected, memory must be readout
and cleared before the next recording!
Menu
Recording to memory
:
Internally available memory capacity:
Memory internal: 512.0 kB
Available free memory space:
Memory free:
217.5 kB
Linear memory
without overwriting of data:
Ring memory: -
Activate
ring memory
with overwriting of data:
<ON>
Ø
Nb of act. channels to calculate the storing time:
Meas.chann: 24 active: 05
Input of
cycle
(s. 8.5, format hh:mm:ss):
Cycle:
00:01:00
Minimal cycle
with
50
M/s
corresp. to active channels:
<MIN>
00:00:00.12
Cycle without storing and without sleepmode:
Storing: -
Sleep: -
Select and switch on
storing
using the key:
<ON>
Ø
Sleep: -
Switch on
sleepmode
(s. 10.2.4) using the key:
<ON>
Sleep:
Ø
Storing time
from cycle and channel number:
StoringTime:
24d 13h
Meas.duration,
after start automatic stop after:
Meas.duration: 00:10:00
Number
: e.g. room 12, meas. point 1
s. 10.2.2
Number:
12-001 A
48 ALMEMO 2690-8
* RECORDING TO MEMORY *
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Memory internal:
512.0 kB
Memory free:
125.8 kB
Ring memory: Ø
Meas.channels: 24 active: 05
Cycle:
00:01:00.00
Storing: Ø
Sleep: -
Storing time:
24d 13h
Meas. duration: 00:01:00
Number:
01-001 A
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