PCAN-USB Hub – User Manual
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LED Status Meaning
Red on The CAN interface is initialized. There's a
connection to a driver of the operating
system
Red slow blinking A software application is connected to the
CAN interface
CAN
Red quick blinking Data is transmitted via the connected CAN
bus
RS-232 A/B Green quick blinking Transmission on TxD or RxD
High-speed CAN RS-232