Festo CTEU-DN, Description, Functions And Maintenance, Page: 31 / 130

2. Installation and interfaces
2-9
Festo P.BE-CTEU-DN-OP+MAINT-EN en 1206NH
2.2.5 Fieldbus connection
Fieldbus interface - connection technology and pin
allocation
9 6
5 1
There is a 9-pin sub-D pin plug connector (DE-9) on the bus
node for connection to the fieldbus.
Fieldbus connection (fieldbus interface; sub-D, DE-9)
Pin Allocation (bus signal) Typical wire colour Signal description
1 n.c. n.a. not connected
2 CAN_L Blue DeviceNet Bus Low (CAN Bus Low)
1)
3 V–
(“CAN_GND”) Black Power supply to bus (0 V),
connected to Pin 6
2)
4 n.c. n.a. not connected
5 Drain
(“CAN_SHLD”) Screening,
housing Screening (shield),
functional earth (FE)
3)
6 GND n.a. Ground,
connected to Pin 3
4)
7 CAN_H White DeviceNet Bus High (CAN Bus High)
1)
8 n.c. n.a. not connected
9 V +
(“CAN_V+”) Red Power supply to bus
(DC 24 V)
2)
1)
Received/transmitted data
2)
The bus power supply is not used by the bus node, but is required for the correct functioning of
the DeviceNet bus system
3)
Also connect screening to the plug connector housing
4)
Optional; the ground connection is not used
Tab. 2/3: Fieldbus connection (fieldbus interface; sub-D, DE-9) – pin allocation