Rockwell Automation 1734-ACNR POINT I/O ControlNet Adapter User Manual - Manual (Page 26)

Publication 1734-UM008B-EN-P - August 2005
3-6 Plan to Use Your Adapter
Unconnected messaging lets tools or controllers interface with the CIP
objects supported by the POINT I/O modules. The adapter lets
controllers, scanners, and software applications address objects for
POINT I/O modules on the POINTBus using unconnected messaging.
This requires the adapter to appear as a bridge to these devices. The
POINT I/O modules are directly addressed. The 1734-ACNR adapter is
a proxy server for unconnected messaging.
Software and Hardware Requirements
This manual illustrates the rules and dialog captures for ControlLogix
only because it is the most complex system.
The software and hardware requirements to successfully configure the
1734-ACNR adapter for a ControlLogix system are:
• RSLinx version 2.31.00 or greater
• ControlLogix processor, firmware revision 11.1 or greater
• RSLogix5000 version 11.10 or greater
• RSNetWorx for ControlNet version 3.23.00 or greater
• ControlNet bridge 1756-CNBR/D 5.27 or greater
• Series C or greater POINT I/O modules
Understand ControlNet I/O The ControlNet system is designed to:
• provide high-speed, repeatable, deterministic I/O transmission
• allow control and message information to co-exist on the same
physical media
• make sure that I/O data transfers are not affected by
– programming-terminal message activity
– inter-processor message activity on the network
Scheduled Data-Transfer Connections on a ControlNet Network
Scheduled data transfer on a ControlNet processor:
• is continuous
• is asynchronous to the ladder-logic program scan
• occurs at the actual packet interval