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SYSTEM DESCRIPTION
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8021804/2017-11-27|SICK
T R A N S L A T I O N O F T H E O R I G I N A L I N S T R U C T I O N S | Telematic Data Collector
Subject to change without notice
Permanent data transmission in online mode
The TDC device is connected to a voltage supply and permanently supplied with voltage.
It is also always connected to the mobile network via the SIM card. The GPRS access data
for the SICK online portal is shared with the device through the
TDC Configurator
configuration software.
This means that the TDC device is always
online
, regardless of whether the vehicle or
machine into which the TDC is installed has been started up or not. Sensor data is
therefore always transmitted in real time – even when the motor is not running. Given an
appropriate connection to the TDC device, starting up a motor or machine would therefore
constitute a signal in itself, which could then be transmitted and analyzed.
Data storage in offline mode
If there is no mobile signal, the data received from the connected sensors is stored on the
internal device memory. No matter how many sensors are connected, sensor data can be
stored for up to one month.
If the device is not connected to a voltage supply, it will not be possible to save sensor data.
The TDC device will be back online as soon as a connection to the mobile network is
reestablished, and at this point the sensor data that has been saved will be transmitted
automatically to the SICK online portal. When using an internal customer server, it will be
possible to access data again once the connection has been restored.
Fig. 9: Data storage on the TDC device in offline mode
If the connection to the mobile network is interrupted for longer than one month, the data
stored on the internal device memory will be overwritten in line with the FIFO (first in, first
out) principle. What this means is that the data that was stored first will be the first to be
overwritten.
This principle ensures that the data from the last four weeks is always available – even
when the connection to the mobile network is interrupted for a prolonged period of time.
Device logging
TDC device activity, such as when a voltage supply is connected or the mobile network is
accessed, is reported to the SICK online portal.
Using the notification management system, the SICK online portal can issue a message
in the event of a mains voltage failure or a failure of the mobile network (for further
information on this, please also refer to Chapter
3.2.2.3 Visualization and monitoring
Note