Communication Formats: Non-I/O Modules
    The modules and corresponding communication formats are listed in the tables below.
     TIP: 
    
The default communication formats are shown in bold.
The Communication Format you choose for ControlNet Adapters allows rack-based communication to occur with digital I/O modules in the same chassis as the adapter.
Refer to the Logix 5000 Controllers Common Procedures manual (publication 1756-PM001) for more detailed information on choosing the appropriate Comm Format.
For these modules:  | These communication formats are available:  | 
1734-ACNR/A 1734-AENT/A 1738-ACNR/A 1738-AENT/A 1756-CNB/A 1756-CNB/B 1756-CNB/D 1756-CNBR/A 1756-CNBR/B 1756-CNBR/D 1756-ENBT/A 1756-ENBT/B 1756-ENET/B  | Listen Only - Rack Optimization None Tip:  For the 1756 Ethernet adapters, there is no default Comm Format, however these 3 formats are available. | 
CONTROLNET-MODULE ETHERNET-MODULE  | Data - DINT Data - DINT-With Status Data - INT Data - INT-With Status Data - REAL Data - REAL-With Status Data - SINT Data - SINT-With Status Input Data - DINT Input Data - DINT-Run/Program Input Data - DINT-With Status Input Data - INT Input Data - INT-Run/Program Input Data - INT-With Status Input Data - REAL Input Data - REAL-With Status Input Data - SINT Input Data - SINT-Run/Program Input Data - SINT-With Status  | 
1771-ACN15 1771-ACNR15  | Listen Only - Rack Optimization Rack Optimization  | 
1788-CN2DN 1788-EN2DN/A  | Data Input Data  | 
1794-ACN15/C 1794-ACNR15/C  | None (i.e., Rack communications is not possible) Rack Optimization Tip:  There is no Listen Only Rack Optimization option for Flex. | 
1794-AENT/A 1794-AENT/B 1797-ACNR15  | None (i.e., Rack communications is not possible) Rack Optimization  | 
ETHERNET-PanelView  | Data - INT Input Data - INT Data - DINT Input Data - DINT  | 
The Communication Format you choose for a 2711 PanelView Operator Terminal determines the size of the Input and Output Data sizes (32 Integer and 8 Integer sizes are available).
For this module:  | These communication formats are available:  | 
2711 PanelView Operator Terminal  | Data - 32 INT
                   Data - 8 INT  | 
The Communication Format you choose for a 56AMXN DCSNet Interface determines the corresponding connection count.
For this module:  | These communication formats are available:  | With these data connection counts:  | 
56AMXN DCSNet Interface  | Master - 7 Drops  | 2  | 
Master - 14 Drops  | 3  | |
Master - 21 Drops  | 4  | |
Master - 28 Drops  | 5  | |
Master - 35 Drops  | 6  | |
Master - 42 Drops  | 7  | |
Master - 49 Drops  | 8  | |
Master - 56 Drops  | 9  | |
Master - Listen Only - 7 Drops  | 2  | |
Master - Listen Only - 14 Drops  | 3  | |
Master - Listen Only - 21 Drops  | 4  | |
Master - Listen Only - 28 Drops  | 5  | |
Master - Listen Only - 35 Drops  | 6  | |
Master - Listen Only - 42 Drops  | 7  | |
Master - Listen Only - 49 Drops  | 8  | |
Master - Listen Only - 56 Drops  | 9  | |
Slave - 7 Drops  | 2  | |
Slave - 14 Drops  | 3  | |
Slave - 21 Drops  | 4  | |
Slave - 28 Drops  | 5  | |
Slave - 35 Drops  | 6  | |
Slave - 42 Drops  | 7  | |
Slave - 49 Drops  | 8  | |
Slave - 56 Drops  | 9  | |
Slave - Listen Only - 7 Drops  | 2  | |
Slave - Listen Only - 14 Drops  | 3  | |
Slave - Listen Only - 21 Drops  | 4  | |
Slave - Listen Only - 28 Drops  | 5  | |
Slave - Listen Only - 35 Drops  | 6  | |
Slave - Listen Only - 42 Drops  | 7  | |
Slave - Listen Only - 49 Drops  | 8  | |
Slave - Listen Only - 56 Drops  | 9  | 
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