User manual

Publication CNET-UM001C-EN-P - November 2005
3-12 Configure a ControlNet Module
Use RSNetWorx for
ControlNet Software
You must use RSNetWorx for ControlNet software to schedule the network
before the configured I/O devices in your application will become active. You
must also reschedule the network if a change is made to an existing network
that was already scheduled.
Schedule a ControlNet Network for the First Time
RSNetWorx software stores information in keeper devices. The following
ControlNet communication modules are keeper cable devices:
• 1756-CN2(R) modules
• 1756-CNB(R) modules
• 1769-L32C and 1769-L35CR controllers
• 1784-PCICS and 1784-PKTCS cards
• 1788-CNx cards
• 1797-ACNR15
• PLC-5C controller
If you configure a keeper on one network and then use it on another network,
the conflicting information can make it difficult to use RSNetWorx software to
schedule the new network. In extreme cases it may be impossible to go online,
more commonly you get many apparently irrelevant error messages about
devices that existed on the old network but do not exist or are different on the
new one.
• For more information on the network keeper, refer to the section
Understanding the Network Keeper.
• For more information on how to reset valid keepers to an unconfigured
state to resolve mismatches, see the RSNetWorx software online help.
• For more information on how to clear the memory or keeper
information in a ControlNet communication module, refer to the
Knowledgebase at http://support.rockwellautomation.com.
You can schedule a ControlNet network either:
• offline
or
• online.
These options are covered in the following sections.