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OVERVIEW
Official designation: Allen-Bradley 1769-L20 (1769 CompactLogix, Processor Module)
Role/Application: This controller executes control logic and manages communication for small-scale industrial applications using the 1769 Compact I/O platform.
KEY SPECS SUMMARY
Power: 5V DC, 600mA
Interfaces / Ports: One RS-232 Port
Indicators: RUN, FORCE, BATT, I/O
Operating Temp: 0 to 60 degrees C
Platform / Compatibility: 1769 Compact I/O
Limit: 64 KB User Memory
Lifecycle: End of Life
FREQUENTLY ASKED QUESTIONS
Technical Specifications:
Q: What is the maximum number of I/O banks supported by the 1769-L20?
A: It supports 1 local expansion bank with up to 8 modules.
Wiring & Installation:
Q: Which cable is recommended for connecting to the RS-232 serial port?
A: Use the 1747-CP3 or 1756-CP3 serial cable for communication.
Troubleshooting & Compatibility:
Q: What does a solid red I/O LED signify on this processor?
A: It indicates an unrecoverable I/O fault or a broken connection.
Replacement & Upgrades:
Q: What is the suggested modern replacement for the discontinued 1769-L20?
A: The 1769-L24ER-QB1B is a common migration path for this series.
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| After-sales Service Contact or Customer Support Number | See this page for details |
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