User`s guide

Chapter 7: Adept DeviceNet
NOTE:By default, Adept does not supply 24 V on the controller to power the
DeviceNet bus. A separate power supply can be used to power the components on
the DeviceNet bus, or the default can be overridden with jumpers. See Power Sup-
ply and the DeviceNet Bus on page 90.
NOTE:The controller incorporates a 120 Ohm line termination impedance. It is
important that devices connected to the network also have a terminating resistor
connected between CAN-H (white) and CAN-L (blue). See Termination of the
DeviceNet Network on page 89.
Configuring DeviceNet
The Adept SmartController EX motion controller has a default configuration such that, if you
plug in a DeviceNet module configured with a baud rate of 125 kbps, the first 64 inputs and
64 outputs will automatically be mapped as the following signals:
MAC_ID 1
l
Input: 1289 to 1352 and
l
Output:257 to 320
MAC_ID 2
l
Input: 1353 to 1416 and
l
Output:321 to 384
This makes the DeviceNet plug and play.
For other configurations, use the Adept ACE software for software setup. This assigns the con-
troller signals to the physical ports of the DeviceNet nodes. Refer to the Adept ACE User's
Guide for details on configuring DeviceNet.
NOTE:The local setting baud rate must match the DeviceNet node’s setting.
From the Adept ACE software:
1.
Double-click on the controller in the tree structure pane.
This will open the object editor for the controller.
2.
Click the Configure button, check Configure DeviceNet, and click Next.
3.
Follow the on-screen wizard instructions.
7.4 DeviceNet Physical Layer and Media
The DeviceNet physical layer and media specifications are published in the ODVA manual,
chapter 9, volume 1. It describes possible topologies and components of the physical layer.
The figure Trunk Lines and Drop Lines Made of Thick and Thin Cable on page 86 shows sev-
eral possible topologies. The DeviceNet specifications also specify system grounding, mixing of
thick and thin cable media, termination, and power distribution.
Adept SmartController EX User’s Guide, Rev. D
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