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Siemens 6FC5222-0AA00-0AA1 SINUMERIK MCI board extension

Siemens 6FC5222-0AA00-0AA1 is an MCI board extension connecting auxiliary handwheels, probes and high-speed CNC I/O to SINUMERIK control hardware.

System role

Rebuilt from individual evidence

The Siemens NC 61 document identifies this reference as an MCI board extension in slot version for SINUMERIK 840Di sl.

It connects two handwheels, two probes and four high-speed CNC input and output channels to the control hardware.

Unknown: the installed board condition, exact 840Di sl configuration, firmware, wiring and replacement compatibility are not established.

Exact reference
6FC5222-0AA00-0AA1
Category
PLC / CPU
Evidence checked
2026-09-12

System role

This section explains what the product does and where it acts in the surrounding system.

Function
Connects two handwheels, two probes and four high-speed CNC input and output channels to the SINUMERIK control hardware.
System position
Sits inside the SINUMERIK control hardware between auxiliary field devices and the CNC control system.
Upstream / inputs
Receives handwheel, probe and digital input signals from connected machine devices.
Downstream / outputs
Routes auxiliary device signals and high-speed CNC outputs through the control hardware.
Limitations
Unknown: the installed board condition, exact 840Di sl configuration, firmware, wiring and replacement compatibility are not established.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

  • The Siemens NC 61 document identifies 6FC5222-0AA00-0AA1 as an MCI board extension in slot version for SINUMERIK 840Di sl.

    Confidence: high

  • The document states that the board extension connects two handwheels, two probes, and four high-speed digital CNC inputs and outputs.

    Confidence: high

Inferences

  • Inference: the board extension sits inside the SINUMERIK control hardware and exposes auxiliary handwheel, probe and high-speed CNC I/O connections to the control system.

    Confidence: medium

    Rationale: The Siemens document names the slot-version board extension and its attached device interfaces.

Unknowns

  • Unknown: the installed board condition, exact 840Di sl configuration, firmware, wiring and replacement compatibility are not established.

    Confidence: low

    Missing evidence: The product document describes the board design, not the installed system or unit condition.

System position diagram

A flow from handwheels, probes and CNC input and output devices through the Siemens 6FC5222-0AA00-0AA1 MCI board to SINUMERIK control hardware.

Reading limit: system position only, not a wiring or safety drawing.

The MCI board extension connects auxiliary machine devices to the SINUMERIK control hardware.

Enlarged system diagram

A flow from handwheels, probes and CNC input and output devices through the Siemens 6FC5222-0AA00-0AA1 MCI board to SINUMERIK control hardware.

The MCI board extension connects auxiliary machine devices to the SINUMERIK control hardware.

View Mermaid source
flowchart LR
  devices["Handwheels, probes and CNC I/O"] --> board["6FC5222-0AA00-0AA1 MCI board"]
  board --> control["SINUMERIK control hardware"]
View diagram labels
Nodes
Handwheels, probes and CNC I/O; 6FC5222-0AA00-0AA1 MCI board; SINUMERIK control hardware
Edges
Auxiliary signals; CNC input and output channels

Next action

Use this reference as the SINUMERIK MCI board extension when the documented 840Di sl control configuration matches.

Unknown: verify the installed control configuration, wiring and replacement compatibility before fitting the board.

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