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3.5.2 How to Configure Network Power Units
This section describes selecting and disposing power units for supplying the network power to
individual nodes of the DeviceNet.
(1) Maximum Current on the DeviceNet cable
The network power of the DeviceNet is set to rated 24 Vdc. The current which can be passed on
the network cable is as follows:
• Trunk line of thick cable: 8 A
Cable length 0m 25m 50m 100m 150m 200m 250m 300m 350m 400m 450m 500m
Max. current (A) 8.00 8.00 5.42 2.93 2.01 1.53 1.23 1.03 0.89 0.78 0.69 0.63
Figure 3.10 Current of the Trunk Line (thick cable)
Thick cable Maximum Current
Current value (A)
Cable length
Maximum Current of Thick Cable
Current value (A)