adept technology SmartController EX User Manual page 88

Figure 7-1. Trunk Lines and Drop Lines Made of Thick and Thin Cable
DeviceNet allows devices to be powered directly from the bus, and devices can use the same
cable to communicate with other devices on the bus. DeviceNet nodes are hot-pluggable —
you can remove or add components on the bus without powering down the network.
NOTE: This hot-pluggable feature is not fully supported. If you add a new component to the net-
work, you must make changes in the Adept ACE Configuration Tools. Those changes are not
active until you reboot the Adept SmartController EX motion controller.
The power distribution on the network/bus does not need to be in one place. The distribution
of power supplies needs to be well planned because there are certain constraints on the power
supply. In general, power supplies can be placed at any point in the network. The maximum
current rating of a trunk line is 8 amps. DeviceNet allows opto-isolated, externally powered
devices (e.g., AC drive starters and solenoid valves) to operate on the same bus cable. For
detailed information, see the DeviceNet Technical Specifications.
Network Size
Network Length
Baud Rate
125 Kbps
250 Kbps
500 Kbps
Data Packets
Adept SmartController EX User's Guide, Rev.C
Chapter 7: Adept DeviceNet
Table 7-2. Features of a DeviceNet Network
A maximum of 64 nodes [0...63]
Selectable, end-to-end network distance varies with speed
Distance (thick cable)
500 m (1,640 ft)
250 m (820 ft)
100 m (328 ft)
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