88 Rockwell Automation Publication 1756-UM001M-EN-P - February 2012
Chapter 4 ControlLogix System and Controllers
Memory Options
The ControlLogix controller is available in different combinations of user
memory. Use this table to determine which controller meets your memory
requirements.
Table 17 - ControlLogix Controller Memory Options
Controller Memory for Data and
Logic
I/O Back-up Memory
1756-L61 2 MB 478 KB CompactFlash card
(1)
(1) These nonvolatile memory cards are optional and do not come with the controller.
1756-L62 4 MB
1756-L63, 1756-L63XT 8 MB
1756-L64 16 MB
1756-L65 32 MB
1756-L71 2 MB 0.98 MB (1006 KB) SD card
1756-L72 4 MB
1756-L73, 1756-L73XT 8 MB
1756-L74 16 MB
1756-L75 32 MB
The 1756-L7x controllers ship with an SD card installed. We recommend that
you leave the SD card installed because, if a fault occurs, diagnostic data is
automatically written to the card and can be used by Rockwell Automation to
troubleshoot the anomaly.
We recommend that you use the SD cards available from Rockwell Automation
(catalog numbers 1784-SD1 or 1784-SD2).
While other SD cards may be used with the controller, Rockwell Automation
has not tested the use of those cards with the controller. If you use an SD card
other than those available from Rockwell Automation, you may experience
data corruption or loss.
Also, SD cards not provided by Rockwell Automation do not have the same
industrial, environmental, and certification ratings as those available from
Rockwell Automation.
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