# Siemens SIMATIC S7-1200 SB 1231 RTD Signal Board 6ES7231-5PA30-0XB0

**URL:** https://aio.lv/en/product--siemens-6es7231-5pa30-0xb0--1778352
**Data updated:** 2026-05-18 02:52 (EEST)
**Category:** Server Parts & Components
**Manufacturer:** Siemens
**Manufacturer code:** 6ES7231-5PA30-0XB0
**EAN:** 6940408100916
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 183.99 €
**Prices and availability valid until:** 2026-08-14 23:59
**Price without VAT (21%):** 152.06 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-6es7231-5pa30-0xb0--1778352

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 04.08.2026 | free |
| Pickup points | 07.08.2026 | 1.89 EUR |
| Courier delivery to door | 07.08.2026 | 4.99 EUR |

## Summary description

The Siemens SB 1231 RTD signal board is an expansion module designed for the SIMATIC S7-1200 PLC system. It provides precise temperature measurement capabilities by supporting various RTD sensors. This compact module integrates directly into the CPU, offering a cost-effective solution for industrial automation tasks requiring reliable analog input processing for temperature monitoring and control applications.

## Long description

The Siemens SIMATIC S7-1200 SB 1231 RTD signal board is a specialized expansion module engineered to enhance the functionality of the SIMATIC S7-1200 PLC system. By integrating directly into the CPU, this compact signal board provides a streamlined and efficient method for incorporating precise temperature measurement into industrial automation setups. It is designed to process analog signals from various resistance temperature detectors, ensuring accurate data acquisition for monitoring and control processes.
Advantages
This signal board offers a significant advantage by allowing for the expansion of I/O capabilities without requiring additional space on the DIN rail, as it mounts directly onto the front of the CPU. Its compact design makes it an ideal choice for space-constrained control cabinets. Furthermore, the module provides high-precision temperature sensing, which is essential for maintaining consistent quality and safety in industrial environments. The integration process is straightforward, reducing installation time and complexity while maintaining the robust performance standards expected from Siemens automation components.
Suitable for
Industrial temperature monitoring systems
Process control applications requiring RTD sensor input
Compact automation projects with limited installation space
Upgrading existing S7-1200 PLC configurations for thermal data acquisition
This module may not be suitable for applications requiring a high number of analog input channels, as it is designed as a single-channel expansion board. It is also not intended for use with non-RTD sensor types or in environments that exceed the specified operating temperature and environmental ratings of the S7-1200 CPU series.
Key specifications
Compatible with SIMATIC S7-1200 PLC systems
Supports various RTD sensor types
Direct CPU mounting for space efficiency
Analog input processing for temperature monitoring
How to use
To use the SB 1231 RTD signal board, first ensure that the power supply to the S7-1200 CPU is disconnected. Remove the front cover of the CPU and insert the signal board into the designated slot until it clicks into place. Once physically installed, configure the module within the TIA Portal software environment by selecting the appropriate RTD sensor type and scaling parameters. After configuration, download the hardware changes to the PLC and verify the signal input in the monitoring table to ensure accurate temperature readings.
What to consider before purchase
Verify compatibility with your specific S7-1200 CPU model
Ensure the required RTD sensor type is supported by the module
Confirm that the CPU has an available slot for a signal board
Assess if the single-channel input meets your application requirements
Usage recommendations
Always ensure that the RTD sensors are correctly wired according to the technical documentation to prevent measurement errors or damage to the module. Regularly calibrate the sensors and verify the software configuration to maintain long-term measurement accuracy in your automation system.

## FAQ

### How much does the Siemens SB 1231 RTD Signal Board 6ES7231-5PA30-0XB0 cost, and is it available for purchase?

The price is 183.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 04.08.2026 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 SB 1231 RTD Signal Board 6ES7231-5PA30-0XB0 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

## Image

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