SAMSUNG Biometric Reader SSA-R2010 User Manual page 18

installation and external connection
RS-485 Communication Port Connection (Multiple Units)
A RS-485/RS-232 converter is needed to make RS-485 communications across a multiple of the products and
the host PC. Please follow the steps below:
RS-485/RS-232
Converter
- You must connect all RS-485 ports of the product in parallel.
1. Connect the yellow RS-485-A (+) line of one product to the yellow RS-485-A(+) line of other product.
2. Connect the gray RS-485-B(-) line of one product to the gray RS-485-B(-) line of other product.
3. Set a unique COMM ADDR for each product.
- You must connect one of the RS-485 ports of the product to the RS-485/RS-232 converter.
1. Connect the yellow RS-485-A(+) line to the RS-485-A port of the converter.
2. Connect the gray RS-485-B (-) line to the RS-485-B port of the converter.
3. Connect the RS-485/RS-232 converter to the serial port (COM port) of the host PC.
4. Install and launch the application (SAMS).
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installation and external connection
RS-232
RS-485
A B
Max. 1200m
Gray
Yellow
Host PC