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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
1
NC
2
RD 1
3
TD 1
4
IN 1
5
OUT 3
6
NC
7
RTS 1
8
CTS 1
9
IN5
10
VEXT
11
IN 2
12
OUT 4
13
ADC 2
14
GND
15
ADC 1
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Direction Description
Not connected
Output
RS232_1 signal: Received data
Input
RS232_1 signal: Transmitted data
Input
Opto-isolated input 1 (active low)
Output
Opto-isolated output 3 (open collector)
Not connected
Input
RS232_1 signal: Request to send
Output
RS232_1 signal: Clear to send
Input
Counter input
Output
Output voltage reference (4V)
Input
Opto-isolated input 2 (active low)
Output
Opto-isolated output 4 (open collector)
Input
Analog to Digital converter input 2
Ground connection
Input
Analog to Digital converter input 1
2017/07 v1.2
MTX M2M® by MATRIX ELECTRONICA S.L.U
MTX-xG-JAVA-IoT Family
/
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