Rockwell Automation 1738-ADNX ArmorPoint I/O DeviceNet Adapters - Manual (Page 84)

Publication 1738-UM001A-EN-P - February 2005
B-10 Quick Start For the 1738-ADNX
• The 1738-ADNX will automatically maintain the MACIDs of the
backplane modules.
• Note that the assignment of the MACIDs of the non-backplane
subnet modules is manual and is not performed or retained by
the 1738-ADNX.
• The 1738-ADNX supports 125 kb, 250 kb, and 500 kb baudrates.
For this example, you are going to set the Subnet to 125 kb.
When using Auto Start Mode, the adapter:
• Sets all ArmorPoint I/O modules on the backplane to Autobaud.
• Reads all ArmorPoint I/O module IDs on the backplane.
• Sets the ArmorPoint I/O module addresses sequentially.
• Sets the Max Backplane MACID.
• Generates a scanlist for the backplane.
• Maps automatically I/O data, based on byte (I/O data is mapped
in the adapter’s memory at the next available byte), word (I/O
data is mapped at the next available word), double-word (I/O
data is mapped at the next available double word) or fixed (the
data is mapped to a fixed allocation size). You will choose one
of these four options from a pulldown menu later in this Quick
Start.
When the adapter completes this sequence of events, the
ArmorPoint I/O modules connected to the adapter are ready to
accept connections from a scanner.
IMPORTANT
Your 1738-ADNX DeviceNet adapter must be free of
I/O connections when you use Auto Start Mode. If
another scanner device has established I/O
connections with the adapter (if it is mapped in
another scanner’s scanlist), 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.
IMPORTANT
Although Auto Start Mode lets your adapter operate
with a default configuration, you can choose to
manually change the configuration after operation
has begun or you can write a custom configuration.