10 (26)
6
Connections
6.1
Overview
Fig. 2
Connections
1
CAN 1
2
CAN 2 (exclusively in standard version)
3
Fieldbus expansion connector channel 2 (option)
4
Fieldbus expansion connector channel 1 (option)
5
PCI/PCIe connector
6
Expansion board connector (option)
6.2
CAN Bus
The bus coupling can optionally be galvanically isolated. With galvanic isolation the shield of the
CAN connector is connected to CAN ground through a 1 MΩ resistor and a 10 nF capacitor. The
shields of the CAN connectors are connected directly together.
For a not galvanically isolated interface, the CAN ground and PC ground are at the same potential.
For best noise immunity use shielded CAN cables.
Pin Allocation D-Sub 9 Connector
Pin no.
Signal
Via fieldbus expansion
1
—
CAN-Low (low-speed)
2
CAN-Low (high-speed)
—
3
CAN GND
—
4
—
CAN-High (low-speed)
5
—
—
6
—
—
7
CAN-High (high-speed)
—
8
—
LIN
9
—
VBAT
LIN
(8-18 V DC)
6
3
1
4
5
2
PC CAN Interface User Manual
4.01.0230.20000 3.2 en-US
