Siemens 6FC5311-0AB00-0AA1 | SINUMERIK 840D NCU 571.2 Control Unit

Product Overview
The Siemens 6FC5311-0AB00-0AA1 is an NCU (Numerical Control Unit) module for the SINUMERIK 840D powerline CNC system. This variant features the -0AA1 suffix, indicating a hardware revision of the NCU 571.2 base model .

6FC5311-0AB00-0AA0 vs 6FC5311-0AB00-0AA1
The key difference between these two models is the hardware revision level. Both modules are functionally identical for SINUMERIK 840D powerline systems, with the AA1 variant serving as a direct replacement for AA0 units .

Product Lifecycle Notice
⚠️ Like the AA0 version, this module belongs to the SINUMERIK 840D powerline series. Based on reference product lifecycle data (PM410 - Discontinued as of 2019.10.01), both variants are now available as spare/replacement parts only.

Technical Specifications

• Model Number: 6FC5311-0AB00-0AA1

• Product Type: NCU (Numerical Control Unit) - Hardware Revision

• Series: SINUMERIK 840D NCU 571.2 / 561.2 

• Hardware Status: Revision level (suffix 1 indicates update)

• Backward Compatibility: Fully compatible with AA0 version

• Processor: NCU 571.2 series processor 

• User Memory: 256 KB (battery-backed, expandable up to 1.5 MB)

• Channels: Up to 2 channels

• Way Groups: 1 way group

• Axes: Up to 2 axes with interpolation

• Drive System: SIMODRIVE 611D compatible

• Communication: PROFIBUS-DP interface (X102)

• Panel Interface: MPI interface (X101) 

Key Features

• Hardware Revision: Updated revision addressing earlier hardware issues

• Direct Replacement: Can replace AA0 versions in existing systems

• Same Functionality: Identical performance specifications as AA0 variant

• Central CNC Control: NC-CPU and PLC integration 

• PROFIBUS-DP Communication: Industrial network ready 

• Expandable Memory: Up to 1.5MB user memory

When to Choose AA1 Over AA0

• When replacing a failed AA0 unit with the latest available version

• For systems requiring the most up-to-date hardware revision

• When AA0 stock is unavailable (AA1 is fully backward compatible)

Typical Applications

• Direct replacement for 6FC5311-0AB00-0AA0 in existing systems

• New installations requiring the latest hardware revision

• Spare parts inventory for 840D powerline systems

What's Included

• 6FC5311-0AB00-0AA1 NCU 571.2 module (hardware revision)

• Battery (pre-installed)

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