Beckhoff FC5101 Bedienungsanleitung PDF herunterladen (Seite 17)

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· corresponds to the DeviceNet "Thin Cable" specification

Screening

The screen is to be connected over the entire length of the bus cable, and only galvanically grounded at one

point, in order to avoid ground loops.

The design of the screening, in which HF interference is diverted through R/C elements to the mounting rail

assumes that the rail is appropriately earthed and free from interference. If this is not the case, it is possible that

HF interference will be transmitted from the mounting rail to the screen of the bus cable. In that case the screen

should not be attached to the couplers - it should nevertheless still be fully connected through.

Notes related to checking the CAN wiring can be found in the Trouble Shooting section.

Cable colours

Suggested method of using the Beckhoff CAN cable on Bus Terminal and Fieldbus Box:

BK51x0

Fieldbus Box

FC510x

Function

ZB5100 cable co-

lour

ZB5200 cable co-

lour

1 3 3 CAN

Ground

black/ (red) black

2 5 2 CAN Low

black blue

3 1 5 Screen Filler strand Filler strand

4 4 7 CAN high

white white

5 2 9 not used

(red) (red)

FC510x: D-sub, 9 pin

The CAN bus cable is connected to the FC5101 and FC5102 CANopen PCI cards via 9-pin sub-D sockets, with

pins assigned as follows.

Pin Assignment

CAN low (CAN-)

CAN ground (internally connected to pin 6)

Screen

CAN ground (internally connected to pin 3)

CAN high (CAN+)

The unlisted pins are not connected.

Note: An auxiliary voltage of up to 30 V DC may be connected to pin 9. Some CAN devices use this to supply

the transceiver.

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Beckhoff FC5101 Bedienungsanleitung Seite 17