9. DEVICE PROGRAMMING
All sensor parameters are saved in the sensor connector; certain other parame-
ters are stored in the device itself. These include the real-time clock and date,
scanning cycle and output format (see Sections 6.3.2/3), device address (see
Section 9.3), atmospheric pressure (see Section 6.2.5), and user interface lan-
guage (see Section 5.2); they also include the device designation (see Manual,
Section 6.2.4), and hysteresis (see Manual, Section 6.2.7). The last two in this
list are only accessible via the interface. The baud rate is saved in the data
cable (see Section 9.2).
9.1 Date and time-of-day
The ALMEMO 2390-5 incorporates an integrated real-time clock with date and
time-of-day for logging measuring times. This real-time clock is buffered by
means of the device battery with the effect that date and time-of-day are re-
tained even after switching off.
TIME function ´
TM
´
Select by pressing key:
....
Program the time in the 6-character format hh:mm:ss (see Section 5.4)
The clock can be set to zero by pressing the keys
PROG
,
CLEAR
.
DATE function ´
DA
´
Select by pressing key:
...
Program the date in the 6-character format dd:mm:yy (see Section 5.4)
e.g. date 1st May 2003. The date can be cleared
by pressing the keys
PROG
,
CLEAR
0 1:0 1:0 0
DA
9.2 Baud rate, data format
Via the serial interface you can program the device and sensors or view the
current programming status (see Manual, Chapter 6). You can also (as descri-
bed in Sections 6.2 and 6.3) output manual and cyclic measuring operations eit-
her online or after recording (see Section 6.4) offline to a printer or computer.
The various interface modules are plugged into socket A1 (3). Connection to
the devices is described in the Manual, Section 5.2. Modules for networking
the devices are described in Manual, Section 5.3.
The baud rate for all interface modules is programmed on leaving the factory to
9600 baud. In order to avoid unnecessary problems when networking several
devices together, the baud rate should not be altered; rather the computer or
printer should be set to match. If this is for some reason not possible, then in
the BAUD RATE function ´BR´ (for activation, see Section 5.2), using the
keypad, enter the values 150, 300, 600, 1200, 2400, 4800, 9600 baud, and 57.6
or 115.2 kbaud (paying attention not to exceed the maximum baud rate for the
FUNCTION
1 2:3 4:5 6
TM
FUNCTION
0 1:0 5:0 3
DA
50
ALMEMO
2390-5
Device programming
Содержание ALMEMO 2390-5
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