BOLERO-LT Hardware Description
Version 1.0.6
6.1.2 Special pin description
Please note that all IO lines that can function as input or output should not be directly
connected to an (external) power source without a Resistor, LED and so on, otherwise
damage to the device will occur. Exceeding the current limit given for the output can
burn out the output components immediately and damage the device as well.
6.1.2.1 Analog input (6)
Analog voltage up to 32.0 V with 10 bit resolution can be processed and remotely
evaluated by a server application. Pull-up resistor to a constant input voltage allows for
resistive transducers to ground, e.g. fuel sensor or thermistors.
Because the pin
6
can
operate either as digital or analog, it has to be configured and calibrated for such
purposes before using.
To use these IOs as analog inputs, the following configuration is required in the software.
PFAL,IO
0
.Config=AI,2,11
PFAL,IO
0
.Config=DI,3,6
where
0
is the index corresponding to
IO1
(pin 6). The strings
AI and DI
are identifiers
for analog and digital input respectively. While the value after strings e.g.
3
and
6
are
min. and max. voltages that will be used to generate Low and High events respectively.
Detailed information can be found in software manual
“
steppIII_fox_bolero_lt_PFAL_Configuration_Command_Set.pdf
“
.
6.1.2.1.1Connection example using IO1 as analog inputs:
This pin can be connected to a temperature sensor (a NTC resistor for instance).
Therefore, you can set a low and high temperature alarm. Passage through these
thresholds will trigger an alarm. As alarm type you can use an SMS or a TCP with GPIOP
as attachment protocol. The SMS contents can be sent to a mobile phone. An
application example is shown in figure below:
Figure 5:
Connection example for analog input (IO1)
This circuit example is only an illustration to show the aim of the analog input.
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