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Rockwell Automation Publication 1789-UM002K-EN-P - January 2015
Appendix B
Communicate with Devices on a ControlNet Network
Example 1: SoftLogix
Controller and ControlNet I/O
In this example, one SoftLogix controller controls I/O modules through a
1794-ACN15 module.
Controlling I/O Modules
This example has the SoftLogix controller controlling the I/O modules
connected to the remote 1794-ACN15 module. The data the SoftLogix
controller receives from the I/O modules depends on how you configure the
I/O modules. You can configure each module as a direct connection or as a rack-
optimized connection. One location (chassis or DIN rail) can have a
combination of some modules configured as a direct connection and others as
rack optimized.
Total Connections Required by the SoftLogix Controller
This table calculates the connections used in this example.
1
2
3
Item
Description
1
SoftLogix controller
2
ControlNet network
3
1784-ACN15 module with I/O (remote FLEX™I/O)
Connection
Amount
SoftLogix controller to 1784-PCICS card.
0
SoftLogix controller to remote 1794-ACNR15 module (communication
format is’none’).
0
SoftLogix controller to four I/O modules. (through 1794-ACNR15)
All four module types (discrete and analog) can be configured as direct
connections.
4
Total Connections Used:
4
