6GK1561-3AA02 Siemens CP 5613 A3 communications processor

Siemens identifies 6GK1561-3AA02 as the CP 5613 A3 communications processor. The CP 5613 A3 is a PCI card with an interface for connection to PROFIBUS and includes the DP-Base software and DP-RAM interface for a DP master.

System role and interfaces

Rebuilt from individual evidence

Unknown: evidence boundary

Siemens identifies 6GK1561-3AA02 as the CP 5613 A3 communications processor.

The CP 5613 A3 is a PCI card with an interface for connection to PROFIBUS and includes the DP-Base software and DP-RAM interface for a DP master.

At system level, 6GK1561-3AA02 sits between the compatible PCI host computer and the connected PROFIBUS or MPI segment. This sentence is an inference from the cited identity and function facts.

Unknown: the individual unit's condition, firmware, configuration, installation compatibility, and current commercial status.

Exact reference: 6GK1561-3AA02
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: Transmits PROFIBUS or MPI communication between a compatible PCI host computer and connected automation devices.
System position: Sits between the compatible PCI host computer and the connected PROFIBUS or MPI segment.
Upstream / inputs: Receives the PCI host connection and configured PROFIBUS/MPI messages from the upstream computer.
Downstream / outputs: Passes PROFIBUS/MPI communication to connected automation devices.
Limitations: Unknown: the individual unit's condition, firmware, configuration, installation compatibility, and current commercial status.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

Siemens identifies 6GK1561-3AA02 as the CP 5613 A3 communications processor.
Confidence: high
- mall.industry.siemens.com — retrieved 2026-09-12; high confidence
The CP 5613 A3 is a PCI card with an interface for connection to PROFIBUS and includes the DP-Base software and DP-RAM interface for a DP master.
Confidence: high
- mall.industry.siemens.com — retrieved 2026-09-12; high confidence

Inferences

Inferred system position: sits between the compatible PCI host computer and the connected PROFIBUS or MPI segment.
Confidence: medium
Rationale: The exact-reference source establishes the product identity and documented function; the adjacent system position is stated as an engineering inference.
- mall.industry.siemens.com — retrieved 2026-09-12; high confidence

Unknowns

Unknown: the individual unit's condition, firmware, configuration, installation compatibility, and current commercial status.
Confidence: low
Missing evidence: No unit-level inspection, installed-system record, configuration, condition, or current commercial assessment was captured in this individual lookup.

System position diagram

Compatible PCI host computer connects through 6GK1561-3AA02 CP 5613 A3 communications processor to Connected PROFIBUS/MPI devices. — Evidence-supported system position for 6GK1561-3AA02; this is a conceptual role diagram, not wiring or safety instruction.

View Mermaid source

flowchart LR
  upstream["Compatible PCI host computer"] --> unit["6GK1561-3AA02 CP 5613 A3 communications processor"]
  unit --> downstream["Connected PROFIBUS/MPI devices"]

View diagram labels

Nodes: Compatible PCI host computer; 6GK1561-3AA02 CP 5613 A3 communications processor; Connected PROFIBUS/MPI devices
Edges: Documented upstream interface; Documented downstream system interface

Next action

Use the documented CP 5613 A3 communications processor role as the evidence-supported starting point; verify the installed system and exact unit before service, replacement, or commissioning.

Unknown: confirm the installed unit's condition, firmware, configuration, installation compatibility, and current commercial status before a sourcing or replacement decision.

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