Siemens 6ES7238-5XA32-0XB0 SIMATIC S7-1200 SM 1238 Energy Meter 480 V AC

Siemens 6ES7238-5XA32-0XB0 SIMATIC S7-1200 SM 1238 Energy Meter 480 V AC is documented for the stated industrial control system role.

System function

Rebuilt from individual evidence

System position

Evidence and limits

Siemens documents this reference as an S7-1200 SM 1238 energy measurement module for one- and three-phase TN or TT systems up to 480 V AC, with 1 A and 5 A current ranges.

Measures voltage, current, phase angle, power, energy values and frequency and makes those electrical measurements available to the S7-1200 CPU.

The inferred system position places this reference Sits between the monitored AC supply and the S7-1200 CPU data image as the electrical measurement stage.

Unknown: installation-specific compatibility, firmware and configuration support, current unit condition, and commercial availability.

Exact reference: 6ES7238-5XA32-0XB0
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: Measures voltage, current, phase angle, power, energy values and frequency and makes those electrical measurements available to the S7-1200 CPU.
System position: Inferred system position: Sits between the monitored AC supply and the S7-1200 CPU data image as the electrical measurement stage.
Upstream / inputs: Voltage measurement connections and current transformer signals provide the monitored AC inputs.
Downstream / outputs: The S7-1200 CPU receives measured electrical values and channel diagnostics for monitoring or control logic.
Limitations: Unknown: installation-specific compatibility, firmware and configuration support, current unit condition, and commercial availability.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

Siemens documents this reference as an S7-1200 SM 1238 energy measurement module for one- and three-phase TN or TT systems up to 480 V AC, with 1 A and 5 A current ranges.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
Measures voltage, current, phase angle, power, energy values and frequency and makes those electrical measurements available to the S7-1200 CPU.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence

Inferences

Inferred system position: Sits between the monitored AC supply and the S7-1200 CPU data image as the electrical measurement stage.
Confidence: medium
Rationale: The cited exact-reference documentation identifies the component and its interfaces or function; the placement in this system chain is explicitly marked as an inference.
- support.industry.siemens.com — retrieved 2026-09-12; high confidence

Unknowns

Unknown: installation-specific compatibility, firmware and configuration support, current unit condition, and commercial availability.
Confidence: low
Missing evidence: The individual lookup does not capture an installed-unit inspection, complete configuration record, or current commercial record.

System position diagram

A system diagram places 6ES7238-5XA32-0XB0 between an upstream field or network system and downstream control equipment, with the placement marked as an inference. — The diagram places 6ES7238-5XA32-0XB0 between the documented upstream and downstream functions; that chain position is an explicit inference.

View Mermaid source

flowchart LR; upstream["Upstream field or network system"] --> component["6ES7238-5XA32-0XB0 SIMATIC S7-1200 SM 1238 Energy Meter 480 V AC"]; component --> downstream["Downstream control program or equipment"];

View diagram labels

Nodes: Upstream field or network system; 6ES7238-5XA32-0XB0 SIMATIC S7-1200 SM 1238 Energy Meter 480 V AC; Downstream control program or equipment
Edges: Documented input or communication data; Documented output or system effect

Next action

The captured evidence supports the documented identity and concrete system role for 6ES7238-5XA32-0XB0.

Confirm the installed rack, interfaces, firmware and configuration before replacement or commissioning.

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