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OVERVIEW
Official designation: Siemens 6ES7 321-1BL00-0AA0 (SM 321, Digital Input Module)
Role/Application: Optically isolated 32-channel digital input module for SIMATIC S7-300 PLCs, acquiring 24 V DC signals with high density and protection against electrical interference.
KEY SPECS SUMMARY
Power: Backplane current max 15 mA
Interfaces / Ports: 40-pin front connector
Indicators: Green LED per channel for status
Operating Temp: Max 16 inputs at 60 degrees C vertical
Platform / Compatibility: SIMATIC S7-300 / ET 200M
Limit: Max shielded cable length 1000 m
Lifecycle: Product cancellation October 1, 2025
FREQUENTLY ASKED QUESTIONS
Technical Specifications:
Q: What is the range for the rated load voltage L plus DC for this module?
A: The load voltage range is 20.4 V DC to 28.8 V DC.
Wiring & Installation:
Q: How are the 32 input channels grouped for potential separation or isolation?
A: The 32 input channels are isolated in groups of 16.
Troubleshooting & Compatibility:
Q: What is the typical input current required for a signal 1 condition?
A: The typical input current for a signal 1 is 7 mA.
Replacement & Upgrades:
Q: Does the 6ES7 321-1BL00-0AA0 module support diagnostic or hardware interrupt alarms?
A: No, the module does not support any diagnostic or hardware interrupt alarms.
상품 정보 고시
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| After-sales Service Contact or Customer Support Number | See this page for details |
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