User manual

1 Publication CNET-UM001C-EN-P - November 2005
Chapter 4
Control I/O
Use This Chapter
This chapter describes how a controller controls distributed I/O over
ControlNet. The controller requires a communication module to connect to
the network. Distributed I/O modules require an adapter to connect to the
network.
To control distributed I/O over ControlNet, you must:
• Add local and remote ControlNet communication modules to your
RSLogix 5000 project.
When you create a new RSLogix 5000 project with the CompactLogix
1769-L32C or 1769-L35CR controller, the Controller Organizer creates
a ControlNet port in the local chassis. In this case, you do not need to
add a separate local communication module.
• Add distributed I/O to your RSLogix 5000 project.
• Schedule the ControlNet network via RSNetWorx for ControlNet
software.
• Use the I/O information in RSLogix 5000 software.
You can also validate connections to distributed I/O when controlling it over
ControlNet. This task is particularly useful when one or more of the
connections are not working but is not required, especially when all
connections appear to work normally.
Read this
chapter for:
• 1756-CN2, 1756-CN2R modules
• 1756-CNB, 1756-CNBR modules
• 1769-L32C, 1769-L35CR controllers
• 1784-PCICS, 1784-PKTCS cards
• 1788-CNx cards
• 1794-ACN15, -ACNR15 adapters
• 1797-ACNR15 adapter
For This Information See Page
Set Up the Hardware 4-2
Set a Requested Packet Interval 4-2
Select a Communication Format 4-3
Add Local and Remote ControlNet Modules 4-10
Add Distributed I/O 4-11
Access Distributed I/O 4-13
Validate Connections 4-17