Rockwell Automation 1738-ADNX ArmorPoint I/O DeviceNet Adapters - Manual (Page 29)

Publication 1738-UM001A-EN-P - February 2005
What Is the ArmorPoint DeviceNet Adapter? 2-13
Auto Address
The EDS parameter Auto Address is available from the primary
DeviceNet and lets the user sequentially order the node addresses of
backplane I/O modules. This parameter is not a mode but occurs on a
single occurrence only. The node address selected is assigned to the
module closest to the adapter. The next closest module is assigned the
next numerically higher value. The numbering pattern continues for
all connected backplane I/O modules.
Enable this parameter in the RSNetWorx for DeviceNet software.
Physical List Acquire Status
The adapter maintains a physical list that indicates the order of the
node addresses of all ArmorPoint I/O modules present on the
backplane. Physical List Acquire Status shows the status of this
physical list acquire process.
The adapter requires that each backplane I/O module has a MACID
greater than that of its neighbor to its immediate left. The list is
created when power is applied to the adapter and each time a module
is inserted on the backplane.
The valid values are:
• Idle
• Busy
• Auto Start Mode
IMPORTANT
Changes to the Auto Address parameter only take
effect if they are downloaded on an individual basis.
(For example, if you enable the Auto Address and
download the changes with additional changes to
other features, the node addresses of the I/O
modules remains disabled.)
This parameter should be set to ‘Do Nothing’ when
you download all parameters or when Automatic
Device Replacement is enabled for the adapter.