Siemens 6GK5992-2GA00-8AA0 MM992-2CUC copper media module

Documented MM992-2CUC copper media module function and network position for 6GK5992-2GA00-8AA0.

Documented system function

Rebuilt from individual evidence

The documented 6GK5992-2GA00-8AA0 is a MM992-2CUC copper media module with the identity and characteristics stated in the cited source.

The documented interfaces place this device between an upstream control network and downstream industrial equipment.

Exact reference: 6GK5992-2GA00-8AA0
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: Routes or transmits the documented communication traffic at the industrial system boundary.
System position: Sits at the documented network boundary.
Upstream / inputs: Receives the upstream control-network data.
Downstream / outputs: Serves the downstream network devices.
Limitations: Unknown: installed wiring, configuration, firmware compatibility, and current unit condition.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

Siemens identifies this reference as the SCALANCE X MM992-2CUC media module accessory.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
The Siemens data sheet lists two 10/100/1000 Mbit/s electrical RJ45 ports, IP20 construction and installation in a media-module slot.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence

Inferences

The documented interfaces place this device between an upstream control network and downstream industrial equipment.
Confidence: high
Rationale: The exact-reference identity and documented interfaces place this device at the stated network boundary.
- support.industry.siemens.com — retrieved 2026-09-12; high confidence

Unknowns

Unknown: installed wiring, configuration, firmware compatibility, and current unit condition.
Confidence: low
Missing evidence: An installed-system inspection and compatibility record were not available in the individual lookup.

System position diagram

Upstream control network connected through 6GK5992-2GA00-8AA0 to downstream network devices. — The device sits between the upstream control network and downstream network devices.

View Mermaid source

flowchart LR
  upstream[Upstream control network] --> device[6GK5992-2GA00-8AA0]
  device --> downstream[Downstream network devices]

View diagram labels

Nodes: Upstream control network; 6GK5992-2GA00-8AA0 device; Downstream network devices
Edges: Network data enters the device; Device serves the downstream network

Next action

Use this reference when the documented interfaces and network requirements match the installation.

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