8devices Korlan USB2CAN Manuale d'uso - Pagina 6
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2.2 LED indication
Korlan USB2CAN has three LEDs (Power, Error, Info) for device status indication.
Device status Indication modes are listed in the table below.
LED
PWR LED on
INFO LED on, STAT LED off
STAT LED on, INFO LED off
INFO LED on, STAT LED blinking
INFO LED blinking fast
INFO LED blinking slow
STAT LED blinking slow
2.3 CAN bus termination
A High-speed CAN bus (ISO 11898-2) must be terminated on both ends with 120 Ohm resistors.
Standard termination example.
The 120-Ω characteristic impedance twisted-pair cable must be terminated with an impedance of the same
value to minimized reflected waves that occur from miss-matched impedances. Bad terminal may cause signal
reflections and the transceivers of the connected CAN nodes (CAN- interface, control device) may not work.
The USB2CAN does not have an internal termination. Device must be used on a terminated CAN bus.
KORLAN USB2CAN
USER GUIDE
1. INFO – LED (Info)
2. STAT – LED (Status)
3. PWR – LED (Power)
CAN interface enabled, device is ready to receive or send data.
CAN interface is not enabled on a host device.
STATUS DESCRIPTION
Device is powered on.
CAN interface sending data.
CAN bus passive error.
CAN bus warning.
CAN bus-off error.
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