Rockwell Automation 1734-ADNX POINT I/O DeviceNet Adpater User Manual - Manual (Page 30)

Publication 1734-UM002C-EN-P - July 2003
2-10 What is the 1734-ADN(X) Adapter?
Auto Catalog Replace
Auto Catalog Replace corrects errors that might occur when backplane
modules of the same type are removed and replaced in the wrong
location. If modules of the same type are removed and returned to
the wrong locations, the adapter identifies the returned modules,
updates their MAC IDs and continues operation.
Backplane (1734-ADN)/Subnet (1734-ADNX) Baudrate
EDS parameter Backplane Baudrate is accessible from the primary
DeviceNet and sets a specific baudrate for all backplane I/O modules.
IMPORTANT
If modules of different types are removed and
returned to the wrong locations, the adapter
identifies the returned modules and alerts you (via
RSNetWorx for DeviceNet, the Node Status Table,
and the Faulted Node Table) that the error has
occurred and must be corrected.
IMPORTANT
The removal and return scenario exists whether the
system is under power or not. If the system is under
power, the scenario arises immediately. If the system
is not under power, the scenario arises in the next
power cycle.
Also, the example above shows removal of two
adjacent modules. The scenario described exists
anytime 2 or more adjacent modules are removed
and not all are returned.
IMPORTANT
Care must be taken when replacing backplane I/O
modules. Each I/O module stores its configuration
parameters in internal non-volatile memory. You
must either enable ADR for all modules or manually
configure each module in a non-manufacturing
environment when the module is being replaced or
placed on the network for the first time. Failure to do
so could result in inadvertent control attributed to
different configuration settings.