DeviceNet 5-5
© 2005 HMS Industrial Networks
AB7607 User manual
Automatic Device Recovery (ADR)
This is a feature of the DeviceNet master which allows a slave node that has
dropped off the network (Fault, power loss, etc.) to be replaced with another
device of the same type. There are 2 parts to ADR, Address Recovery, and Con-
figuration Recovery.
Note:
ADR is only available when using Rockwell Software’s RSNetWorx for
DeviceNet as the configuration tool.
Address Recovery
Address Recovery is responsible for automatically setting a new device’s address
to that of a slave that has lost communications.The steps followed by ADR are:
1. When the master detects loss of a slave, it begins to monitor for a
device at MAC ID 63.
2. An identical device is added to the network at MAC ID 63.
3. The master verifies that the new device at 63 is exactly the same kind
as the slave that was lost.
4. The master changes the new device’s MAC ID from 63 to that of the
lost slave.
Configuration Recovery
Configuration Recovery is responsible for setting the configuration of a slave
device to the configuration that is stored in the Anybus-X. The slave’s configura-
tion is stored in the Anybus-X’s non-volatile memory. Whenever the Anybus-X
establishes communication with the slave device, the configuration is downloaded
to the slave.
Configuration recovery serves 2 purposes. 1. If a new device is added to the net-
work to replace a faulted slave, after Address Recovery is completed, Configura-
tion Recovery will configure the new device. 2. Configuration Recovery
guarantees that the slave devices will always run the same configuration.