Burkert Type 8793 - Manual (Page 216)

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DeviceNet
32.7. Terminating circuit for DeviceNet systems
When installing a DeviceNet system, ensure that the terminating circuit of the data lines is correct. The circuit prevents
the occurrence of interference caused by signals reflected onto the data lines. The trunk line must be terminated at
both ends with resistors of 120 Ω each and 1/4 W power loss (see “Figure 127: Network topology, DeviceNet”).
32.8. Network topology of a DeviceNet system
Line with one trunk line and several drop lines.
Trunk and drop lines are made of identical material (see “Figure 127: Network topology, DeviceNet”).
Trunk line
DeviceNet cable
Terminating
resistor
120 Ω
¼ W Terminating
resistor
120 Ω
¼ W
Drop lines
DeviceNet cable,
max. 6 m long
T01 Tn
Subscriber 1 (node 1) Subscriber n (node n)
V + *
V –*
CAN_H
CAN_L
* not assigned, as separate power supply
Figure 127: Network topology, DeviceNet
english
Type 8792, 8793