USER MANUAL
TYPE ML-2012/13
Manufacturers of low power instruments
page 26
We recommend the use of the USB-connection over the wireless function. This is because of possible
drop outs in communication. When a firmware upgrade procedure is interrupted, the upgrade will fail, but
the unit continues to operate, with the previous version. The USB- connection is faster and more reliable.
4.10.3 Firmware upgrade over the air
It is also possible to perform a firmware upgrade over the air. For this you must use the software-package
“terminal link”. It allows you to modify or upgrade your data logger from remote. For more information
consult your local ydoc dealer.
4.10.4 Firmware Driver limitations
The ML-2012/13 Data logger is equipped with various drivers, for several tasks. The number of total
drivers is limited to 16. This means you can choose maximum 16 drivers from all the drivers available.
Each driver can handle (collect or send) a number of parameters. The total number of parameters is
limited to 64. So, theoretically, the ML-2012/13 can handle up to 16 sensors with each 4 parameters. But
in this case there is no output possible. In most cases two or three drivers are needed for minimum
operation (internal driver, tcp output-driver, or email-driver). When a user has an additional analog
sensor, it will take a driver as well.
Example:
A user wants to connect a large number of INW CT2X sensors. This sensor measures temperature and
conductivity. So each sensor “uses” two parameters. Also he likes to send the data via FTP, and he
enables the following internal sensors: Rest Capacity, Battery Voltage, and Current. So, besides the
Sensor drivers there are 2 drivers needed:
-
Internal Driver
-
Output Driver
So the maximum number of Sensor-drivers is: 16 – 2 = 14
So there are 14 Sensor-drivers left for use with the CT2x sensors.
The total number of parameters is: 14 * 2 + 3= 31
So the number of parameters is no problem (31 < 64)
He can connect 14 CT2X sensors max.
4.10.5 Power Switch Limitations
The Power Switch is capable of powering sensors up to 200 mA. The output voltage is 12 Volts DC.
4.10.6 Modem
The modem inside the ML-2012/13 (the smallest modem in the world, @ the moment this manual is
written), is capable of GPRS and GSM communications. It has quad band support, so it can be used
worldwide. For selecting the proper frequency band, use the “modem settings” in the configuration menu.
In most cases GPRS communication is requested, so use a GPRS enabled SIM-card to inhibit this
operation. Consult your local telecom provider for the right SIM-Card and – settings. If GSM
communication is requested, use a GSM-DATA subscription. GSM communication is suitable for modem
dial in communication. We strongly advise to activate this option in the SIM cards used in the logger. This
is often used to re-configure a logger, remotely, or to monitor actual values. In most cases, normal GPRS
communication is sufficient for the operation of the data logger.
4.10.7 Modem Firmware Upgrade
