Burkert 8640, Operating Instructions Manual

Page: 123 / 196

8640 - 121
F
IELD BUS MODULE
CAN
OPEN
Accessories
DeviceNet T-piece M12 Id. No. 788 643
Field bus connection IP 65
For field bus connection, the 5-pole Micro-Style connector M12 (plug) specified by the DeviceNet is
employed with the following pin assignment.
The bus driver is supplied internally by a voltage which is galvanically isolated from the supply voltage.
For this reason, no separate voltages must be provided by the bus on Pins 2 and 3.
Pin-No. Signal name
1 Drain (screen)
2 not used
3 GND
4 CAN HIGH
5 CAN LOW
Termination IP 65
On installation of a CANopen system, care must be taken to terminate the data lines correctly. The
termination avoids disturbances by signal reflections on the data lines. For this purpose, the trunk line
must be terminated at both ends, as shown, by resistors of 120 ohm and 1/4 W power dissipation.