
MATRIX 400™ REFERENCE MANUAL 
4   
1 
19-pin Connector Pinout for Matrix 400™ The table below gives the pinout of the 19-pin M16 male connector for connection to the 
power supply and input/output signals. Use this pinout when the Matrix 400™ reader is 
connected by means of the 19-pin connector: 
Figure 3 - 19-pin M16 Male Connector 
19-pin M16 male connector pinout 
Pin Name  Function 
A  Vdc  Power supply input voltage + 
L  GND  Power supply input voltage - 
K CHASSIS  Cable shield internally connected by capacitor to the 
chassis 
B  I1A  External Trigger A (polarity insensitive) 
C  I1B  External Trigger B (polarity insensitive) 
D  I2A  Input 2 A (polarity insensitive) 
E  I2B  Input 2 B (polarity insensitive) 
H  O1+  Output 1 + 
F  O1-  Output 1 - 
G  O2+  Output 2 + 
I  O2-  Output 2 - 
S  RX  Auxiliary RS232 RX 
O  TX  Auxiliary RS232 TX 
R ID+  ID-NET™ network + 
P ID-  ID-NET™ network - 
Pin Name RS232 
RS485 
Full-Duplex 
RS485 
Half-Duplex 
M TX TX+ RTX+ 
U RX *RX+  
N RTS TX- RTX- 
T 
MAIN 
INTERFACE 
(SW 
SELECTABLE)  CTS  *RX-  
* Do not leave floating, see par. 5.4.2 for connection details.