Configured for non-volatile system firmware backup and project data retention in ControlLogix controllers, the Allen-Bradley 1784-CF64 (1784-CF64 Memory Board) provides direct physical/electrical execution.
Hardware Specifications
Parameter
Specification
Model
1784-CF64
Brand
Allen-Bradley
Origin
USA / Global Manufacturing standard
Weight
0.04 lbs (0.018 kg)
Dimensions
Standard CompactFlash Type I form factor
Operating Temp
0 to 60 deg C (32 to 140 deg F)
Power Consumption
Powered via controller backplane bus interface slot
The 1784-CF64 operates within the Allen-Bradley ControlLogix architecture to manage deterministic firmware flash compatibility and non-volatile project memory restoration. Built for industrial environments, the module supports automatic user application loading upon controller power-up, preventing code loss during prolonged utility outages. Utilizing deterministic access cycles across the internal controller bus, memory read and write operations maintain synchronization with controller tasks without compromising backplane bus communication velocity.
Frequently Asked Questions
Q: Can the 1784-CF64 card be inserted or removed while the ControlLogix controller is powered?
A: Hot-swapping or inserting the CompactFlash memory card while the controller is actively writing data can result in card corruption or application fault. Insertion and removal should occur while the controller is in REM or PROG mode, ensuring no active flash operations are in progress.
Q: What triggers automatic image loading from the 1784-CF64 into the controller RAM?
A: Image loading behavior is defined by controller non-volatile memory properties (e.g., Load on Power Up, Load on Corrupt Memory, or User Initiated). When configured, the controller reads the image stored on the 1784-CF64 and overwrites active RAM upon boot.
Field Installation Guidelines
Ensure ESD grounding precautions are maintained by wearing an anti-static wrist strap connected to chassis ground before handling the card.
Locate the CompactFlash card slot on the front face of the ControlLogix controller module.
Align the 1784-CF64 card keyways strictly with the controller slot rails. Do not force insertion.
Press the card firmly until the release button extends or the card sits flush inside the socket housing.
Verify successful detection via RSLogix 5000 / Studio 5000 controller properties under the Non-Volatile Memory tab before initiating flash operations.
