# Siemens SIMATIC S7-1200 SM 1231 RTD Analog Input Module, 4 Inputs

**URL:** https://aio.lv/en/product--siemens-6es7231-5pd32-0xb0--12445766
**Data updated:** 2026-05-18 02:54 (EEST)
**Category:** Server Parts & Components
**Manufacturer:** Siemens
**Manufacturer code:** 6ES7231-5PD32-0XB0
**EAN:** 6940408101876
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 521.99 €
**Prices and availability valid until:** 2026-08-01 23:59
**Price without VAT (21%):** 431.40 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-6es7231-5pd32-0xb0--12445766

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Pickup points | 24.07.2026 | 1.89 EUR |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

The Siemens SM 1231 RTD is an analog input module designed for the SIMATIC S7-1200 programmable logic controller series. It features 4 inputs specifically for temperature measurement using resistance temperature detectors (RTD). This module enables precise data acquisition for industrial automation systems, ensuring reliable signal processing and integration within the S7-1200 control environment.

## Long description

The Siemens SIMATIC S7-1200 SM 1231 RTD analog input module is a specialized expansion component designed to enhance the capabilities of the SIMATIC S7-1200 programmable logic controller series. This module provides four dedicated inputs for high-precision temperature measurement using resistance temperature detectors (RTD). It is engineered to integrate seamlessly into the S7-1200 control environment, allowing for reliable and accurate signal processing in various industrial automation applications.
Advantages
This module offers significant flexibility for system configuration, allowing users to tailor their SIMATIC S7-1200 setup to meet specific operational requirements. By utilizing this signal module, engineers can optimize control cabinet space and improve hardware efficiency. The device ensures stable data acquisition, which is critical for maintaining consistent performance in temperature-sensitive industrial processes. Its robust design supports reliable communication and integration within the broader Siemens automation ecosystem.
Suitable for
Industrial temperature monitoring systems
Process control applications requiring RTD sensors
Automation tasks involving precise thermal data acquisition
Expansion of existing SIMATIC S7-1200 controller configurations
When it may not be suitable
This module is specifically designed for RTD sensors and is not compatible with standard voltage or current analog signals. It cannot be used with the CPU 1211C model, as the S7-1200 signal module architecture requires specific CPU compatibility for proper operation.
Key specifications
Number of inputs: 4
Input type: Resistance Temperature Detector (RTD)
Compatibility: SIMATIC S7-1200 series (excluding CPU 1211C)
Function: Analog signal acquisition for temperature measurement
How to use
The SM 1231 RTD module is installed directly onto the SIMATIC S7-1200 CPU or an adjacent signal module. Ensure the power is disconnected before mounting the module to the rail. Once physically connected, the module must be configured within the TIA Portal engineering software. Assign the appropriate RTD sensor type to each of the four channels and define the measurement ranges to match your specific hardware setup. After configuration, download the hardware project to the CPU to begin data acquisition.
What to consider before purchase
Verify that your specific CPU model is compatible with signal modules
Ensure your temperature sensors are of the RTD type supported by the module
Check available space in your control cabinet for expansion
Confirm that your software environment supports the configuration of this module
Usage recommendations
Always ensure that the wiring for the RTD sensors is shielded and properly grounded to minimize electromagnetic interference, which can affect the accuracy of temperature readings in industrial environments.

## FAQ

### How much does the Siemens SIMATIC S7-1200 SM 1231 RTD Analog Input Module cost, and is it available for purchase?

The price is 521.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 21.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Siemens SIMATIC S7-1200 SM 1231 RTD Analog Input Module be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Siemens products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Siemens service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

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