Rockwell Automation 1756-XXXX ControlLogix Analog I/O Modules - Manual (Page 205)

Publication 1756-UM009C-EN-P - December 2010 205
Configure ControlLogix Analog I/O Modules Chapter 10
Communication Format
The communication format determines:
• what type of configuration options are made available.
• what type of data is transferred between the module and its
owner-controller.
• what tags are generated when configuration is complete.
The communication format also returns status and rolling timestamp data.
Once a module is created, you cannot change the communication format
unless you delete and recreate the module.
The table describes communication formats used with analog input modules.
Input Module Communication Formats
If you want the input module to return this data Choose this
communication format
Floating point input data Float data
Integer input data Integer data
Floating point input data with the value of the coordinated system time (from its local chassis) when
the input data is sampled CST timestamped float data
Integer input data with the value of the coordinated system time (from its local chassis) when the input
data is sampled CST timestamped integer data
Floating point input data with the value of the coordinated system time (from its local chassis) when
the input data is sampled when the 1756-IF16 or 1756-IF8 module is operating in the differential mode CST timestamped float data -
differential mode
Floating point input data with the value of the coordinated system time (from its local chassis) when
the input data is sampled when the 1756-IF16 or 1756-IF8 module is operating in the high-speed mode CST timestamped float data -
high-speed mode
Floating point input data with the value of the coordinated system time (from its local chassis) when
the input data is sampled when the 1756-IF16 or 1756-IF8 module is operating in the
single-ended mode CST timestamped float data -
single-ended mode
Integer input data with the value of the coordinated system time (from its local chassis) when the input
data is sampled when the 1756-IF16 or 1756-IF8 module is operating in the differential mode CST timestamped integer data -
differential mode
Integer input data with the value of the coordinated system time (from its local chassis) when the input
data is sampled when the 1756-IF16 or 1756-IF8 module is operating in the high-speed mode CST timestamped integer data -
high-speed mode
Integer input data with the value of the coordinated system time (from its local chassis) when the input
data is sampled when the 1756-IF16 or 1756-IF8 module is operating in the single-ended mode CST timestamped integer data -
single-ended mode