The Allen-Bradley 1784-CF64 is an industrial CompactFlash memory card designed for ControlLogix and PLC-5 automation systems , used primarily for non-volatile data storage, system backup, and application file handling. Manufactured by Rockwell Automation, it provides a reliable storage medium that ensures controller data integrity during power loss or system maintenance.
This card is commonly used in legacy ControlLogix L6 series controllers where stable memory retention and fast system recovery are required in industrial automation environments.
Technical Specifications (including Dimensions & Weight) Parameter Specification Product Type Industrial CompactFlash Memory Card Series ControlLogix / PLC-5 compatible Storage Capacity 64 MB Memory Type Non-volatile flash memory Function Program storage, data backup, recipe handling Operating Temperature 0°C to 60°C Storage Temperature -40°C to 85°C Humidity 5%–95% non-condensing Shock Resistance Up to 30 g operating / 50 g non-operating Vibration 2 g @ 10–500 Hz
Physical Dimensions & Weight
Item Value Size (L × W × H) 36 × 42 × 3.3 mm (CompactFlash standard form factor)Weight ~0.014 kg (14 g)
Recommended Related Models
1784-CF128 – 128 MB Industrial CompactFlash Card
1784-PKTX – ControlLogix communication module (legacy systems)
1756-L61 – ControlLogix controller compatible with CF storage
1756-L71 – enhanced ControlLogix CPU module
1756-EN2T – EtherNet/IP communication module
Popular Allen-Bradley Models
1756-L81E ControlLogix Processor Module
1769-L33ER CompactLogix Controller
1756-EN2T EtherNet/IP Communication Module
1734-IB8 POINT I/O Input Module
1794-ACN Flex I/O Adapter Module
Applications The 1784-CF64 is widely used in:
ControlLogix system program storage and backup
PLC-5 legacy system memory expansion
Industrial automation data logging and archiving
Recipe management in production systems
Fast recovery after controller replacement or failure
Firmware and application file storage in PLC environments
Its non-volatile architecture ensures that critical automation data remains intact even during unexpected power loss.
Advantages
Reliable non-volatile memory for industrial environments
Stable data retention even during power failure
Simple plug-in installation into ControlLogix controllers
Rugged design suitable for vibration and temperature variation
Supports system backup and fast recovery operations
Compatible with legacy Rockwell automation platforms
Long lifecycle support for industrial applications
Low failure rate compared to mechanical storage media
Technical FAQs 1. What is the main function of the 1784-CF64?
2. What is its storage capacity?
3. Which systems is it compatible with?
4. Does it store program logic?
5. Is it removable?
6. What happens if power is lost?
7. What is its operating temperature range?
8. Can it be used for modern controllers?
9. Is it still in production?
10. Why is it important in automation systems?
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