Rockwell Automation Publication 1769-UM022C-EN-P - June 2018 187
Chapter 13
Store and Load Programs with a Secure Digital
Card
Use SD Cards for Nonvolatile
Memory
Compact GuardLogix® 5370 controllers support a Secure Digital (SD) card for
nonvolatile memory:
• 1784-SD1 card - Ships with Compact GuardLogix 5370 controller and
offers 1 GB of memory. You can order more 1784-SD1 cards if desired.
• 1784-SD2 card - Available for separate purchase and offers 2 GB of
memory.
Nonvolatile memory lets you keep a copy of your project on the controller. The
controller does not need power or a battery to keep this copy.
Topic Page
Use SD Cards for Nonvolatile Memory 187
Store a Safety Project 189
Load a Safety Project 192
Manage Firmware with Firmware Supervisor 195
IMPORTANT The life expectancy of nonvolatile media is dependent on the number of
write cycles that are performed. Nonvolatile media use a wear leveling
technique, or technology for prolonging the service life, but avoid frequent
writes.
Avoid frequent writes when logging data. We recommend that you log data
to a buffer in the memory of your controller and limit the number of times
data is written to removable media.
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