Rockwell Automation 1440-RMA00-04RC XM-440 Master Relay Module - Manual (Page 66)

Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
66 DeviceNet Information
ADR for XM Modules Automatic Device Replacement (ADR) is a feature of an Allen-Bradley
DeviceNet scanner. It provides a means for replacing a failed device with a
new unit, and having the device configuration data set automatically. Upon
replacing a failed device with a new unit, the ADR scanner automatically
downloads the configuration data and sets the node address.
ADR can be used with XM modules but keep the following in mind when
setting up the XM modules.
• The ADR scanner cannot download the configuration data to an XM
module if the module has a saved configuration in its non-volatile
memory. This happens because the saved configuration is restored and
the module enters Run mode when the power is cycled. (Configuration
parameters cannot be downloaded while an XM module is in Run
mode.) XM modules must be in Program mode for the ADR
configuration to be downloaded and this occurs only when there is no
saved configuration.
• An XM module will enter Run mode automatically after the ADR
scanner restores the module’s configuration only if the module is in Run
mode at the time the configuration is saved to the scanner. If the
module is in Program mode when the configuration is saved, then the
module will remain in Program mode after the configuration is
downloaded by the ADR scanner.
IMPORTANT
It is recommended that ADR not be used in safety related
applications. If the failure of the ADR server, and a subse-
quent power cycle, would result in the loss of protection for
a machine, then ADR should not be implemented.
TIP
To delete a saved configuration from non-volatile
memory, use the Delete service in RSNetWorx for
DeviceNet or perform the following steps in the XM
Serial Configuration Utility.
1. Save the current configuration to a file. From the
File menu, click Save As and enter a file name for
the configuration.
2. Reset the module to factory defaults. Click the
Module tab and click the Reset button.
3. Reload the saved configuration. From the File
menu, click Open and select the configuration file.
4. Make certain to disable auto save. From the Device
menu, clear the Auto Save Configuration check
mark.