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4.7. Data transmission via HTTP/FTP
When data are transferred to a server via HTTP or FTP protocol all data stored on the logger
will be sent to the defined server(s).
The first transmission includes all data recorded so far. Further transmissions will include all
data recorded since the last successful transmission.
In case the data could not be transferred (e.g. because of bad cell reception) the “missing”
data will be sent on with the next succesfull transmission.
4.8. Modem
Data recorded by the integrated MRL-7 can be transmitted to user defined servers (HTTP
and/or FTP).
The modem supply voltage is controlled by the data logger. It is only switched on when a data
transfer has to be performed to save on power consumption. Additionally the modem is
switched on for one hour per day to allow for remote connections to be established with the
system.
To make the modem capable for data transmission a SIM Card has to be inserted. Next, the
APN data and the mobile network defined for the SIM card have to be selected.
4.8.1. APN Data
Establishing a GPRS connection requires setting the correct APN access data (server, user
name and password) which depend on the used network operator.
The APN settings can be set either manually or the settings are chosen from a predefined list
with the software Commander:
Press the [Select APN] button
