Siemens 6ES7231-7PD22-0XA0 SIMATIC S7-200 EM 231 thermocouple input module

Siemens 6ES7231-7PD22-0XA0 SIMATIC S7-200 EM 231 thermocouple input module 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 a SIMATIC S7-200 EM 231 analog input module for S7-22X CPUs, with four thermocouple inputs.

Receives thermocouple signals from field temperature sensors and makes four analog measurements available to an S7-22X CPU.

The inferred system position places this reference Sits between thermocouple sensors and the S7-22X CPU control program in the temperature measurement chain.

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

Exact reference: 6ES7231-7PD22-0XA0
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 thermocouple signals from field temperature sensors and makes four analog measurements available to an S7-22X CPU.
System position: Inferred system position: Sits between thermocouple sensors and the S7-22X CPU control program in the temperature measurement chain.
Upstream / inputs: Thermocouple sensors provide temperature signals to the module.
Downstream / outputs: The S7-22X CPU receives the measured temperature values for its control program.
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 a SIMATIC S7-200 EM 231 analog input module for S7-22X CPUs, with four thermocouple inputs.
Confidence: high
- sps-service.eu — retrieved 2026-09-12; high confidence
Receives thermocouple signals from field temperature sensors and makes four analog measurements available to an S7-22X CPU.
Confidence: high
- sps-service.eu — retrieved 2026-09-12; high confidence

Inferences

Inferred system position: Sits between thermocouple sensors and the S7-22X CPU control program in the temperature measurement chain.
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.
- sps-service.eu — 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 6ES7231-7PD22-0XA0 between an upstream field or network system and downstream control equipment, with the placement marked as an inference. — The diagram places 6ES7231-7PD22-0XA0 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["6ES7231-7PD22-0XA0 SIMATIC S7-200 EM 231 thermocouple input module"]; component --> downstream["Downstream control program or equipment"];

View diagram labels

Nodes: Upstream field or network system; 6ES7231-7PD22-0XA0 SIMATIC S7-200 EM 231 thermocouple input module; 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 6ES7231-7PD22-0XA0.

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

Request help with this reference

Provide the exact reference, machine context, and observed symptom so the next review can stay evidence-based.

Submission is unavailable until durable storage is verified.

Reference or description *Recovery mode *Country *RegionEmail *Phone

I’m unsure of the exact reference or route; keep my description for human qualification.

Add context only if useful

ManufacturerMachine or lineComponent typeUrgencyProduction impactQuantityAcceptable conditionNeed byPreferred contact

Technical context

What is known so far?

Optional updatesNotify me when the supplier price changesSubscribe to the ardkor.org newsletter

This may be safety-sensitive or emergency-related; hold it for human handling.Allow anonymous landing and source categories to be saved with this request for analytics. This is optional and separate from routing.

Recipient and data disclosure

Named recipient: Ardkor human-qualification queue (internal local preview). No partner delivery is enabled here.

Data retained for this review: reference, selected route, location, technical context, contact details, consent state, and any accepted private attachment.

Response expectation: none is promised. If external routing is enabled later, the partner name, disclosed fields, and response expectation must be shown and accepted again.

Withdrawal and deletion: use the private request controls from the receipt to withdraw further processing or request access/deletion. The request remains recorded until the relevant Ardkor systems and any recipient confirm completion.

External routing consent: I separately authorize Ardkor to use this request for human qualification in the named internal queue. No external partner is authorized by this checkbox.

Read the privacy information before sending. For corrections, access, or deletion help, use the contact page or email reference@ardkor.org; mailbox delivery and attendance have not been verified.

This routing state is separate from watch, marketing, payment, and analytics choices. If no capable service match is found, the request remains a human-qualification lead and is never presented as provider acceptance. Ardkor is not an emergency or safety service and submission does not guarantee availability, price, repair, sourcing, or response.