MTX MTX-3G-JAVA-IoT - 4.4 DB15 HD Connector: I;O Expansion Port

MTX-xG-JAVA-IoT Family
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MTX M2M® by MATRIX ELECTRONICA S.L.U
4.4 DB15 HD connector: I/O expansion port
4.4.1 Connector pinout
The STD and DB15 models have a DB15 HD female connector used as I/O expansion port. The pinout
of this port and functionalities of each signal are shown in figure below:
Pin
Signal
Direction
Description
1
NC
Not connected
2
RD 1
Output
RS232_1 signal: Received data
3
TD 1
Input
RS232_1 signal: Transmitted data
4
IN 1
Input
Opto-isolated input 1 (active low)
5
OUT 3
Output
Opto-isolated output 3 (open collector)
6
NC
Not connected
7
RTS 1
Input
RS232_1 signal: Request to send
8
CTS 1
Output
RS232_1 signal: Clear to send
9
IN5
Input
Counter input
10
VEXT
Output
Output voltage reference (4V)
11
IN 2
Input
Opto-isolated input 2 (active low)
12
OUT 4
Output
Opto-isolated output 4 (open collector)
13
ADC 2
Input
Analog to Digital converter input 2
14
GND
Ground connection
15
ADC 1
Input
Analog to Digital converter input 1