H87.0.0X.6C-01
Operating manual G 7500 Series
page 23 of 34
active
O2/cond. channels inactive
active
7.1.1 time and date
Here time and date can be set. The time is shown on the left in the upper status line.
When the time blinks, the time is invalid.
Depending on the language different time-zones are used. In German
MESZ/MEZ (automatic setting of daylight saving time) is used, in all
other languages UTC is used.
All time bases in terminal or data logging files are in UTC to ensure
trouble-free data exchange.
7.1.2 USB-mode
7.1.2.1 mass storage
In USB mass storage the device can no longer access the internal memory. The
logger can no longer be started. Accessing the internal mass storage memory can be
done without driver installation. Logger data can be copied or deleted.
The logger data are stored into a CSV file.
The location depends on the starting time of the logger.
Example: Logger was started 31
st
December 2020 at 19:11. The CSV files are then
located in the folder \DATA\20201231\1911\ .
Single shot logger data is always stored inside the \HISTORY\ directory.
Calibration data are stored like logger data, but inside the \CAL_DATA directory.
7.1.2.2 COM port
In this mode the computer can directly communicate with the device after driver
(windows only) installation. (115200 8N1 \r\n as end marking)
The following commands are supported:
GetChannelMenu: #
menu output with all settings
GetLastValue: #
output of the last measured value
GetCalibrationReport: #
displays the last calibration values
DeviceInformation: 0
device and license information
AddLocationDescription: ##
changes the location description of location ##
# is the channel number starting from 0.
Nr. channel
Data name (Prefix)
0
oxygen
O2
1
pH
PH
2
conductivity
COND
3
temperature (pH)
T_PH
4
temperature (O2/LF)
T_COND
5
air pressure
PRES
6
device menu (value = battery capacity in %)
DEV
7.1.3 alarm activity
The alarm activity means what action should be done when an alarm (of any channel)
is active. The alarm activity will happen only when
a channel’s alarm condition is true,