30 Rockwell Automation Publication 5094-UM001E-EN-P - April 2020
Chapter 1 Digital I/O Module Operation in a Logix 5000 Control System
Data Types Available with FLEX 5000 Safety I/O Modules
The Module Definition includes a Data parameter that matches the module type. 
Safety input modules use Input Data, and safety output modules use Output 
Data.
The module type and Connection choice determine the available Input Data or 
Output Data choices. We recommend that you use Safety Data as the Input Data 
choice unless you need to use Safety Packed Data
(1)
 for backward application 
compatibility.
For more information on the Connection and Data parameter choices available 
with FLEX 5000 I/O modules, see the Logix Designer application.
(1) Safety Packed Data is not available for the 5094-OW4IS and 5094-OW4ISXT modules.