Siemens 6ES7326-2BF01-0AB0 SM 326 fail-safe digital output module

The Siemens 6ES7326-2BF01-0AB0 SM 326 fail-safe digital output module is a fail-safe digital output module for S7F actuator control.

System function

Rebuilt from individual evidence

System position

Evidence and limits

6ES7326-2BF01-0AB0 is identified in the source as a SIMATIC S7 fail-safe SM 326 digital output module with ten 24 V DC, 2 A outputs and diagnostic alarm.

Switches fail-safe 24 V DC actuator loads for SIMATIC S7F systems and reports diagnostic conditions.

System position: in an S7-300F signal rack downstream of the fail-safe CPU and upstream of field actuators.

Unknown: the installed output wiring, load type, safety configuration, and physical condition are not established by the source.

Exact reference: 6ES7326-2BF01-0AB0
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: Switches fail-safe 24 V DC actuator loads for SIMATIC S7F systems and reports diagnostic conditions.
System position: Sits in an S7-300F signal rack downstream of the fail-safe CPU and upstream of field actuators.
Upstream / inputs: The fail-safe CPU supplies output commands and diagnostic configuration to the SM 326.
Downstream / outputs: Connected 24 V DC actuators receive the module's fail-safe switched outputs.
Limitations: Unknown: the installed output wiring, load type, safety configuration, and physical condition are not established by the source.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

The source identifies 6ES7326-2BF01-0AB0 as a SIMATIC S7 fail-safe SM 326 digital output module with ten 24 V DC, 2 A outputs and diagnostic alarm.
Confidence: high
- mall.industry.siemens.com — retrieved 2026-09-12; high confidence
The source documents that 6ES7326-2BF01-0AB0 switches fail-safe 24 V DC actuator loads for SIMATIC S7F systems and reports diagnostic conditions.
Confidence: high
- mall.industry.siemens.com — retrieved 2026-09-12; high confidence

Inferences

Inference: 6ES7326-2BF01-0AB0 occupies this system position: in an S7-300F signal rack downstream of the fail-safe CPU and upstream of field actuators.
Confidence: medium
Rationale: The source identifies the exact reference and documents its interfaces or rack relationship.
- mall.industry.siemens.com — retrieved 2026-09-12; high confidence

Unknowns

Unknown: the installed output wiring, load type, safety configuration, and physical condition are not established by the source.
Confidence: low
Missing evidence: The source describes the product design, not the installed unit, configuration or physical condition.

System position diagram

A system path places 6ES7326-2BF01-0AB0 between an upstream system and a downstream system. — The source-supported position of 6ES7326-2BF01-0AB0 connects the upstream system to the downstream system.

View Mermaid source

flowchart LR
  upstream["Upstream system"] --> product["6ES7326-2BF01-0AB0"]
  product --> downstream["Downstream system"]

View diagram labels

Nodes: Upstream system; 6ES7326-2BF01-0AB0; Downstream system
Edges: Documented signal or power path; System connection

Next action

The evidence supports a concrete system role for 6ES7326-2BF01-0AB0.

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