Direct Connections; Explicit Messaging Communications - Allen-Bradley POINT I/O ControlNet 1734-ACNR User Manual

Direct Connections

The 1734-ACNR supports up to 25 direct connections to POINT I/O
modules. Multiple controllers can connect to the I/O modules.
• The controller that is the "first one in" will win configuration
rights and the ownership of the outputs.
• After an owner has established the connection, any other
controller can operate in a listen only mode to a POINT output
module. Outputs can support only one direct connection and
can support multiple listen only connections.
• An input module is configured by a controller that establishes a
connection as an owner. This configuring controller is the first
controller to establish an owner connection.
Once an input module has been configured (and owned by a
controller), other controllers may establish owner connections to
that module also. That way additional owners can continue to
receive multicast data if the original owner controller breaks its
connection to the module. All other additional owners must
have the identical configuration data and identical
communication format that the original owner controller used,
otherwise the connection attempt is rejected.

Explicit Messaging Communications

The adapter supports unconnected (CIP generic) messaging to objects
within the adapter and the POINT I/O modules.
The 1734-ACNR supports the following objects:
Allen-Bradley
Object
Device Object
Message Router Object
Connection Manager Object
Unconnected Message Manager Object
ControlNet Object
Rack Object
NVS Object
Plan to Use Your ControlNet Adapter Module
Number of Instances
Flash upgrade
Publication 1734-UM008A-EN-P - February 2003
3-5
1
1
1
1
1
5