Rockwell Automation Allen-Bradley ControlNet 1734-ACNR User Manual page 60

4-4 Control I/O
If You Have This Type And Want
of I/O Module
digital module a rack optimized connection
a direct connection or to use specialty
features of the module, such as
diagnostics, timestamps, or electronic
fuses
or
to only listen to data from the module
analog module a direct connection or to use specialty
features of the module, such as
diagnostics, timestamps, or electronic
fuses
or
to only listen to data from the module
Publication CNET-UM001C-EN-P - November 2005
For I/O modules the available communication formats depend on the module
type. This table describes the different communication formats for general
module types.
Table 4.2 Communication Format for Module Types
Select a Communication Format That Specifies
Rack Optimization
The data your controller needs from the I/O module. For example, if
your application uses a 1756-IA16I module in a remote chassis that
must provide timestamped input data, you should select the CST
Timestamped Input Data communication format.
A Listen Only communication format that matches the data the I/O
module is broadcasting to other controllers.
The data your controller needs from the I/O module. For example, if
your application uses a 1756-OF6CI module in a remote chassis that
must provide floating point output data, you should select the Float
Data communication format.
A Listen Only communication format that matches the data the I/O
module is broadcasting to other controllers.
See the online help in RSLogix 5000 programming software for specific
communication formats per I/O module.