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OVERVIEW
Official designation: Allen-Bradley 1756-L55M23 (ControlLogix5555, Processor Module)
Role/Application: High-capacity PLC executes complex logic with 1.5MB user memory and matching nonvolatile backup for industrial coordination.
KEY SPECS SUMMARY
Power: 1.25A at 5.1V DC
Interfaces / Ports: RS-232 Serial Port
Indicators: RUN, FORCE, OK LEDs
Operating Temp: 0 degrees C to 60 degrees C
Platform / Compatibility: ControlLogix Chassis
Limit: 250 Connections Max
Lifecycle: End of Life
FREQUENTLY ASKED QUESTIONS
Technical Specifications:
Q: What is the specific memory allocation for the 1756-L55M23 unit?
A: It features 750 KB for data and 750 KB for program memory.
Wiring & Installation:
Q: Which battery model is required for memory retention during power loss?
A: Use the 1756-BA1 or 1756-BA2 lithium battery assembly.
Troubleshooting & Compatibility:
Q: What does a solid red OK LED status indicate on this processor?
A: This indicates a non-recoverable fault requiring hardware replacement.
Replacement & Upgrades:
Q: What is the recommended modern replacement for this discontinued model?
A: Upgrade to the 1756-L7 series or 1756-L8 series controllers.
상품 정보 고시
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| Model Name | See this page for details |
| Certification or Licensing Information Required by Law | See this page for details |
| Country of Manufacture or Origin | See this page for details |
| Manufacturer | See this page for details |
| After-sales Service Contact or Customer Support Number | See this page for details |
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