6ES7131-6FD00-0BB1 - SIMATIC distributed I/O platform DI 4x120 to 230 V AC

SIMATIC distributed I/O platform DI 4x120 to 230 V AC that receives four 120 to 230 V AC digital field signals for the distributed I/O platform controller.

Documented system function

Rebuilt from individual evidence

System position

Documented characteristics

The source identifies this exact reference as a SIMATIC distributed I/O platform digital input module DI 4x120 to 230 V AC Standard.

In the documented system, the module receives four 120 to 230 V AC digital field signals for the distributed I/O platform controller.

The source documents BU type B1, color code CC41, and a documented predecessor relationship.

Inferred system position: at the distributed I/O edge between AC field signals and the distributed I/O platform controller network.

Exact reference: 6ES7131-6FD00-0BB1
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: receives four 120 to 230 V AC digital field signals for the distributed I/O platform controller.
System position: Sits at the distributed I/O edge between AC field signals and the distributed I/O platform controller network.
Upstream / inputs: AC field devices provide the upstream digital signals.
Downstream / outputs: The distributed I/O platform station forwards the downstream input states to the controller.
Limitations: Unknown: the installed system configuration, wiring, firmware state, physical condition and replacement compatibility.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

The cited source identifies 6ES7131-6FD00-0BB1 as a SIMATIC ET 200SP digital input module DI 4x120 to 230 V AC Standard.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
- asset.conrad.com — retrieved 2026-09-12; high confidence
The cited source describes 6ES7131-6FD00-0BB1 as receives four 120 to 230 V AC digital field signals for the ET 200SP controller.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
- asset.conrad.com — retrieved 2026-09-12; high confidence
The cited source documents BU type B1, color code CC41, and the documented predecessor relationship to 6ES7131-6FD01-0BB1.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
- asset.conrad.com — retrieved 2026-09-12; high confidence

Inferences

Inferred system position: at the distributed I/O edge between AC field signals and the ET 200SP controller network.
Confidence: medium
Rationale: The exact-reference identity and documented function establish where this component participates in the described control path.
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
- asset.conrad.com — retrieved 2026-09-12; high confidence

Unknowns

Unknown: the installed system configuration, wiring, firmware state, physical condition and replacement compatibility.
Confidence: low
Missing evidence: The individual web sources describe the product but do not establish a particular installation or unit condition.

System position diagram

The upstream system stage connects through the exact product to the downstream system stage. — The exact product participates in the system path described by the cited evidence.

View Mermaid source

flowchart LR; Upstream --> Component; Component --> Downstream

View diagram labels

Nodes: Upstream system stage; Exact product; Downstream system stage
Edges: Documented input or supply path; Documented output or control path

Next action

The captured evidence supports the documented identity and system role of 6ES7131-6FD00-0BB1.

Unknown: confirm the installed rack, wiring, firmware, unit condition and replacement compatibility before use.

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