Pepperl+Fuchs WCS Series Manual page 40

WCS* Read Head Position Encoding System
CANopen Interface (LS4xx*)
DIP 8-8
OFF
OFF
ON
ON
Node ID
The address in the CANopen bus, the node ID, can be changed using switches 1 to 6 of the 8-
way DIP switch (3) on the central PCB in the read head. The node ID is encoded in binary form.
The smallest possible node ID is 1, the highest possible node ID is 63. Node ID 0 is not permit-
ted. Node ID 1 is applied by default.
Transfer mode in the CANopen bus
The transfer mode and the "inhibit time" can be configured using switches 1 to 3 of the 4-way
DIP switch (1) on the PCB on the side of the read head.
Asynchronous
Switch position 0 ... 3, see table below.
The read head automatically sends the data to the CAN bus as soon as this has changed in the
read head. However, a wait time of at least x ms must have passed since the last data packet.
This can prevent bus overload. If x = 0 ms, no waiting time is taken into account. In this case,
the maximum data rate to the CAN bus is approx. 1.5 ... 2 ms.
If the data in the read head does not change, it is sent to the CAN bus every y ms. Thus the
control panel receives data even if the vehicle is stationary.
Synchronous
Switch position 7, see table below.
The read head sends data after the SYNC command from the control panel. The typical delay
time after SYNC is 2 ms; the maximum delay time is 5 ms. By default, switch 1 - 3 = OFF, i.e.,
asynchronous data transfer 0 ms/10 ms.
Switch setting
0
1
2
3
4
5
6
7
Data Protocols
Two data protocols are supported: CAN data protocol 1 and CAN data protocol 2.
The data protocols always have a length of 8 bytes. The data protocol is selected via the fourth
switch of the 4-way DIP switch (1) on the PCB on the side of the read head.
DIP4-4 = OFF ... Can data protocol 1
DIP4-4 = ON ... CAN data protocol 2
40
DIP 8-7
OFF
ON
OFF
ON
DIP4-3 DIP4-2
OFF OFF
OFF OFF
OFF ON
OFF ON
ON OFF
ON OFF
ON ON
ON ON
Baud rate
125 kBaud
250 kBaud
500 kBaud
1 MBaud
DIP4-1 x ms/y ms
OFF 0 ms/10 ms
ON 5 ms/20 ms
OFF 10 ms/50 ms
ON 20 ms/50 ms
OFF Reserved
ON Reserved
OFF Reserved
ON SYNC mode