Chapter 2 Use a Memory Card Reader
Rockwell Automation Publication 1756-PM017J-EN-P - March 2022 27
• 1769-L32E CompactLogix controllers, serial number SS0QZ000 and
later
• 1769-L35E CompactLogix controllers, serial number SS0OR9GE
and later
• CompactLogix 5370 controllers, revision 20 and later
Observe these examples:
• A PanelView terminal changes tag values in a controller project. If a
controller loses power, and is not battery backed up, it loses the
program running in the controller and the values changed by the
PanelView terminal. Use the memory card and logic in the project to
store tag values as they change. When the project reloads from the
memory card, it can check the memory card for any saved tag values
and reload those into the project.
• Store a collection of recipes on the memory card. To change a recipe,
program the controller to read data for the new recipe from a memory
card.
• Program the controller to write data logs at specific time intervals.
You can also use a memory card reader to read and write memory cards. This
method writes tag values in binary. You can read the data with any text editor,
but the data displays as the ASCII equivalent of the binary data.
For more information, see the sample projects available with the Logix
Designer application. In the application, from the Help menu, choose Vendor
Sample Projects to display a list of sample projects.
You can also see the 28539 Technical Note "Working with the CompactFlash File
System on Logix5000 Controllers" from the MySupport Knowledgebase. Access
this database by selecting the Knowledgebase link from
http://www.rockwellautomation.com.
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