Produce and Consume Tags (interlock controllers) 
 
78  Rockwell Automation Publication CNET-UM001F-EN-P - February 2018 
 
 
Communication Card  Available Connections  Connections Used by 
a Produced Tag 
Connections Used 
by a Consumed 
Tag 
ControlNet port on the 
CompactLogix controller 
32  Number of consumers  1 
1768-CNB and 1768-CNBR 
CompactLogix ControlNet 
modules 
48 
1788-CNx card in PowerFlex 
700S with DriveLogix 
controller 
32 total ControlNet connections, 22 of which 
can be scheduled and used for producing and 
consuming tags. 
1756-CN2 and 1756-CN2R 
series B ControlNet modules 
in the local chassis of a 
ControlLogix controller 
131 
Note that 3 of the 131 connections are always 
reserved for redundant control. Therefore, 
128 connections are available for standard 
use.
 
1756-CNB and 1756-CNBR 
ControlNet modules in the 
local chassis of a 
ControlLogix controller 
64 
We recommend that you do not use more 
than 40…48 scheduled connections. 
1784-PCICS card in 
a SoftLogix5800 controller 
127 
 
Follow these guidelines as you organize your tags for produced or consumed 
data (shared data). 
Table 19 - Guidelines for Produced or Consumed Data Tags 
Function  Guidelines 
Create the tags at the controller 
scope. 
You can produce and consume only controller-scoped tags. 
Produce and consume specific 
tags. 
You cannot produce or consume these types: 
•  Alias 
•  Axis type 
•  BOOL 
•  Consumed 
•  I/O 
•  INT 
•  Message 
Produced or 
Consumed Data