Rockwell Automation 1734-485ASC POINT I/O ASCII User Manual - Manual (Page 29)

Publication 1734-UM009B-EN-P - July 2003
Configuring Your ASCII Module 2-3
What Does Auto Start Mode Do?
When using Auto Start Mode, the adapter:
1. Sets all modules on the backplane to Auto Baud.
2. Reads module IDs on the backplane.
3. Sets modules addresses sequentially.
4. Generates a scanlist for the backplane.
5. Maps I/O data, based on byte, word and double-word
boundaries.
When this sequence of events is completed, the POINT I/O modules
connected to the adapter are ready to accept connections from a
scanner.
Although Auto Start Mode allows your adapter to operate with a
default configuration, you can write a custom configuration after
operation has begun.
For more information on how to write custom configuration for your
adapter on DeviceNet, see the POINT I/O 1734-ADN DeviceNet
Adapter User Manual, publication 1734-UM002, Chapter 5,
Configuring the 1734-ADN Adapter for DeviceNet.
Are There Any Requirements to Using Auto Start Mode?
There are two requirements to using the Auto Start Mode:
· Your 1734-ADN DeviceNet adapter must use firmware revision
2.001 or higher. If your adapter does not have the required
firmware, you can upgrade it with the ControlFlash tool. For
more information on how to upgrade your adapter’s firmware,
contact your Rockwell Automation representative.
· Your 1734-ADN DeviceNet adapter must be free of I/O
connections on DeviceNet when you use Auto Start Mode. If
another scanner device has established I/O connections with the
adapter, the attempt to use Auto Start Mode is rejected. Also,
when the adapter is configuring itself in Auto Start Mode, no
other device can establish I/O connections to the adapter.