Instruction manual
MATRIX 200â„¢ REFERENCE MANUAL 
4 
NOTE 
To avoid electromagnetic interference when the reader is connected to a CBX 
connection box, verify the jumper positions in the CBX as indicated in its Installation 
Manual.
4.1  POWER SUPPLY 
Power can be supplied to the reader through the CBX100/500 spring clamp terminal pins as 
shown in Figure 37: 
V+ 
in 
Earth 
Ground 
Power Supply 
VGND 
Figure 37 - Power Supply Connections 
The power must be between 10 and 30 Vdc only. 
It is recommended to connect the device CHASSIS to earth ground (Earth) by setting the 
appropriate jumper in the CBX connection box. See the CBX Installation Manual for details. 
4.2  MAIN SERIAL INTERFACE 
CAUTION 
Do not connect to the Main Interface spring clamp terminals if using Host 
Interface Modules (Fieldbus) with the CBX500. 
The signals relative to the following serial interface types are available on the CBX spring 
clamp terminal blocks. 
The main serial interface type and its parameters (baud rate, data bits, etc.) can be 
defined by the user via VisiSetâ„¢ software. The RS485 half duplex is automatically set 
whenever MUX32 communication protocol is enabled. For more details refer to the 
"Communication" folder in the VisiSetâ„¢ Help On Line. 
Details regarding the connections and use of the interfaces are given in the next paragraphs. 
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