Rockwell Automation 1756-CFM ControlLogix Configurable Flowmeter Module - Manual (Page 82)

82 Rockwell Automation Publication 1756-UM010B-EN-P - December 2011
82 Configuring the Configurable Flowmeter Module
Communications Format
The communications format determines what type of data is transferred
between the CFM module and its owner-controller. This feature also defines
the connection between the controller writing the configuration and the
module itself.
The following communications formats are available for your CFM module:
 Data - Use this format for a controller that you want to own the CFM
module and control its configuration data.
Only one controller can use the Data communications format when
connecting to a CFM module.
 Listen-only Data - Use this format for any controller that you want to
listen to the CFM module but not own it.
Multiple controllers can use the Listen-only Data communications
format when connecting to the CFM module. These controllers do not
own the CFM module’s configuration and lose their connection to the
module if the owner-controller loses
The screen below shows the choices available.
TIP
When you select a Listen-only Communications Format,
only the General and Connection tabs appear when you
view a module’s properties in RSLogix 5000 software.
IMPORTANT
Once the module is created, the communications format
cannot be changed. The module must be deleted and
recreated.