Rockwell Automation 1769-SDN Compact I/O DeviceNet Scanner Module User Manual - Manual (Page 58)

58 Publication 1769-UM009E-EN-P - August 2009
Chapter 4 Automatically Configure a DeviceNet Network
While you can use the input and output tags of the scanner directly in your
logic, it is a lot easier to use alias tags.
1. Enter your logic.
2. Type a descriptive tag name for the DeviceNet data.
3. Right-click the tag name and choose New…
alias tag – a tag that represents another tag
• Both tags share the same data.
• When the data changes, both tags change.
• An alias tag provides a descriptive name for data,
such as DeviceNet input or output data.
• If the location of the data changes, simply point the
alias tag lets to the new location without editing
your logic.
As an option, create tags that describe each device without pointing them to
the actual addresses of the devices. Later, convert the tags to aliases for the
data of the devices.
2
3