2020-01
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WCS* Read Head Position Encoding System
CANopen Interface (LS4xx*)
6 CANopen Interface (LS4xx*)
The WCS3B read head with CANopen interface can be connected directly to a CANopen bus
after configuration. The configuration is made via DIP switches in the read head in a de-ener-
gized state.
The CAN interface is galvanically isolated. The read head works as a CANopen slave in the
"Predefined Connection Set" and sends the data in the TxPDO1.
6.1 Electrical Connection
Connection diagram for WCS3B read head
The connection is made via a 5-pin M12 plug. The counterpart to the connector is not included
in the scope of delivery for the read head.
Figure 6.1 WCS3B, CANopen interface
You can obtain suitable connectors and cables from Pepperl+Fuchs, see chapter 12.1.
Data cable
For CANopen data transfer, a four-wire, shielded, twisted pair data cable must be used. One
wire pair is used for the supply voltage, and one wire pair is used for the CANopen data trans-
fer.
The maximum length of the cable depends on the speed of the data transfer. The table below
shows the possible cable lengths depending on the bit rate.
Maximum cable length
Caution!
Property damage and system malfunctions due to incorrect pinout
Incorrect assignment of the wire pairs to the respective pins can result in property damage and
system malfunctions.
• Note the assignment of the wire pairs to the pins as shown in the respective wiring dia-
grams.
Bit rate Cable length
125 kbits/s 500 m
250 kbits/s 250 m
500 kbits/s 100 m
1 Mbits/s 30 m
WCS3B-LS4xx
n.c.
CAN-H
CAN-L
1
2
3
4
5
120Ω
1
3
4
5
2
UB 10 ... 30 V
GND
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