Rockwell Automation Publication 1756-UM001M-EN-P - February 2012 129
Manage Controller Communication (connections) Chapter 7
Connections Example
In this example system, the 1756 ControlLogix controller does the following:
• Controls local digital I/O modules in the same chassis
• Controls remote I/O devices on a DeviceNet network
• Sends and receives messages to and from a CompactLogix controller on an
EtherNet/IP network
• Produces one tag that the 1794 FlexLogix controller consumes
• Is programmed via RSLogix 5000 software
The ControlLogix controller in this example uses these connections.
ControlLogix Controller with
1756-ENBT and 1756-DNB
Modules
1769-ADN Adapter with Compact I/O™ Modules
RediSTATION™
Operator Interface
Series 9000™
Photoeye
DeviceNet Network
EtherNet/IP Network
Workstation
1769-L35E CompactLogix
with 1769-SDN Module
FlexLogix Controller with 1788-DNBO Daughtercard
Table 38 - Connections Example Calculation
Connection Type Device Quantity Connections per
Device
Total Connections
Controller to local I/O modules 4 1 4
Controller to 1756-ENBT module 1 0 0
Controller to 1756-DNB module 1 2 2
Controller to RSLogix 5000 software 1 1 1
Message to CompactLogix controller 2 1 2
Produced tag
Consumed by FlexLogix controller
1
1
1
1
1
1
Total 11
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