Ensure the Carrera lap counter is properly connected to the USB port before proceding with UR30 configuration.
Carrera lap counter connected on =>
Carerra PC Unit OR Serial/TTL adapter connected on => computer USB port
Select "Detect slot car on lane #1" in the RMS I/0 toolbar:
Then select "Carrera Digital" as hardware to detect slot car #1 on the right side pane. UR30 switchs automatically to digital detection mode and configures automatically all slot car detection RMS I/O events:
Specify in the right side pane the serial port configuration for Carrera digital lap counter (digital 124 & digital 132)
Use this pane to check the Carrera system behaves correctly. Detected slot cars are displayed in the text box.
The defaults COM port settings are the Carrera system default ones.
UR displays the Carrera detected event in the detected events edit box.
The Carrera PC Unit can be connected on a USB/Serial TTL adapter as defined in following picture:
GND, Tx and Rx pins have to be connected on matching USB Serial TTL adapter.
Serial to TTL adapter shall be confused with USB/Serial adapter. It's a specific cable or adapter.
Here are Googlized links where USB Serial TTL adapter can be purchased:
Micro SATA Cables USB 2.0 to TTL UART 6pin Module Serial Converter ...
FTDI USB-to-TTL (Serial) Cable 5V