UK
CANfox
5
3 Functions and features
CANfox is a CAN/RS232 interface for the connection of a CAN fieldbus system to
a USB interface� The main applications for the device are to enable the user to do
program downloads, online diagnostics and system performance monitoring from
the user PC interface via the CAN network�
3.1 Features at a glance
● Operating voltage via USB (5 V DC)
● Interfaces electrically isolated
● CAN baud rate freely selectable
● 11 and 29-bit identifiers
● Can be used with CoDeSys (as of 2�3�9�21), Maintenance Tool or CANexplorer
3.2 Block diagram
USB
CAN
RS-232
CAN
Tranceiver
RS-232
Tranceiver
Voltage
regulator
LEDs
USB
USB
Vcc
+5V
CAN-H
CAN-L
RxD
TxD
GND
DC
DC
Inductive
coupler
Inductive
coupler
µController
USB
D+
D–
CAN
RD1
TD1
UART
RxD1
TxD1
IOs
+5V
1: USB plug of type A
2: Electrical separation
3: 6-pole DIN socket
3.3 Application example
CANfox
USB
CAN
RS-232
1: PC or notebook
2: Adapter cables
3: CAN system (here e�g� BasicController with BasicRelay)
