troubleshooting

The reader reads a card normally but no

1) Check the power source of the reader.

 

 

 

reaction is made to SSA-P102 or an

(Check if the LED indicator of the reader is blinking when it has read a card.)

 

irrelevant card number is displayed.

2) Check if the reader works properly.

 

 

 

 

 

 

(Disconnect the reader from the system and use a measuring device such as an oscilloscope

 

to measure the output port of the reader.)

 

 

 

 

3) Check if the reader is properly connected to the system.

 

 

 

 

- Check if the Wiegand communication lines between the reader and the system are

 

 

properly established. (D0, D1)

 

 

 

 

 

 

- The Wiegand communication line should be connected to GND.

 

 

 

(A different power source may be fine but the earth-grounding point should be

 

 

connected to GND of the device.)

 

 

 

 

 

 

4) If you find the output signal from SSA-P102 but with severe noise when using a measuring

 

device to measure the Wiegand communication line, please check the followings:

 

 

- Connect the shield wire and the spare wire of the cable to GND.

 

 

 

- Use the repeater.

 

 

 

 

 

 

 

 

5) If the problem persists after you followed the instructions above, please contact the

 

customer service for technical assistance.

 

 

 

 

 

 

 

 

 

 

 

No communication is available when the

1) Check the communication settings between the PC application and the device.

 

system is in sync with the PC.

- Check the board ID (COMM address) and match it with that of the PC application.

 

 

- Specify a unique board ID (COMM address) for each of the multiple devices.

 

 

- Check the baud rate if it matches with the PC application.

 

 

 

 

- Check if the communication port of the PC matches that of the PC application.

 

 

- Check the communication settings of the PC application.

 

 

 

 

Parity Bit : NONE, Data Bit: 8bit, Stop Bit: 1bit

 

 

 

 

2) Check the connection staus of RS-232 and RS-422.

 

 

 

 

 

 

 

 

 

 

 

 

RS-232

 

RS-422 (Independent Communication)

 

 

 

 

 

 

 

 

 

 

 

 

 

SSA-P102

 

PC

 

SSA-P102

 

RS-232/422

 

PC

 

 

 

 

 

Converter

 

 

 

 

 

 

 

 

 

 

 

 

 

TX Port

 

RX

 

RX(-)

 

TX(-)

Connected to the

 

 

RX Port

 

TX

 

RX(+)

 

TX(+)

 

 

 

 

 

RS-232 cable of the

 

 

GND

 

GND

 

TX(-)

 

RX(-)

 

 

 

 

 

converter

 

 

 

 

 

 

TX(+)

 

RX(+)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RS-422(Multi-Unit Communication)

 

 

 

 

SSA-P102

 

SSA-P102

 

RS-232/RS-422

 

PC

 

 

RX(-)

 

RX(-)

 

TX(-)

 

 

 

 

 

RX(+)

 

RX(+)

 

TX(+)

 

Connected to the

 

 

 

 

 

RS-232 cable of the

 

 

TX(-)

 

TX(-)

 

RX(-)

 

 

 

 

 

 

converter

 

 

TX(+)

 

TX(+)

 

RX(+)

 

 

 

 

For RS-422 communications, install a termination resistor at the point where the

 

system is connected to the RS-422/RS-232 converter of the PC.

 

 

 

(Install a 120Ω termination resistor between the RX+ and the RX- terminals on the

 

device side, another 120Ω between the TX+ and the TX- terminals; the same should

 

be done to the converter. If you are not sure about the wiring, contact the customer

 

service for your help.)

 

 

 

 

 

 

If the problem persists after you followed the instructions above, this may be caused

 

by the defective of an internal circuit. Contact the customer service.

 

 

¼If no communication is established after you tried to do so with multiple devices, pick just one device and connect it to the RS-232/RS-422 converter, and to the PC. Then, check if there is any communication available.

22_ troubleshooting

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Samsung SSA-P102T/EXP manual Irrelevant card number is displayed, System is in sync with the PC, Service for your help

SSA-P102T/EXP specifications

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