Samsung SSA-R2010 User Manual page 29

Problem
My reader does not communicate
with the host PC.
1) Please check the settings of the application software and the controller.
- Check if the product COMM ADDR is recognized by the application
software.
- Set the different COMM ADDR when two or more devices are installed.
- Check the followings when in serial communications.
• Check if the communication speed (57600bps) is the same as the setting
on the software.
• Make sure that COM port of the PC is set correctly on the software.
- When using TCP/IP RJ45
• Check the values of the IP, subnet mask, gateway and port number.
• For details on the settings, refer to the user manual of the software.
2) Check if the communication wiring is done correctly.
- For RS-485
This product RS-485/RS-232 Converter
RS-485-A(+)
RS-485-B(-)
RS-485(Multi Drop)
This product This product
RS-485-A(+) RS-485-A(+)
RS-485-B(-) RS-485-B(-)
If the multi-drop communication doesn't work, test the communication settings one by
one in sequence from the fi rst one.
- For TCP/IP communication
• Check if the link LED indicator on the rear panel fl ickers normally.
• If it doesn't fl icker, check the cable wiring.
3) If the problem persists after you have followed the procedures above,
contact a designated customer service.
Action
RS-485 (Single)
RS-485-A(+)
RS-232 cable
of the converter
RS-485-B(-)
RS-485/RS-232
Converter
RS-485-A(+)
RS-232 cable
of the converter
RS-485-B(-)
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