The following are the technical parameters of the Siemens 6ES7231-5QA30-0XB0 module (based on Siemens official information):
Module Model
6ES7231-5QA30-0XB06ES7142-5AF00-0BA0 Siemens
SIMATIC S7-1200 Analog Input Module, 8-channel Thermocouple InputSiemens 1FL6034-2AF21-1LH1 Servo Motor
Technical Parameter TableSiemens converter 6SE6440-2UD42-0GA1
| Parameter | Description |
| Module Type | Analog Input Module (AI Module), supporting thermocouple signal input. |
| Number of Channels | 8 analog input channels (dedicated for thermocouples). |
| Input Signal Type | Supports various thermocouple types: |
| – B, E, J, K, L, N, R, S, T, PL200, Ni1000, etc. | |
| Resolution | 16 bits (signed integer, including the sign bit). |
| Accuracy | – Typical error: ±0.1% (for Type K thermocouple at 25°C); |
| – Cold junction compensation error: ±0.5°C. | |
| Input Range | Depends on the thermocouple type (for example: for Type K, it is -200°C ~ +1350°C; for Type J, it is -210°C ~ +1200°C). |
| Open Circuit Detection | Supports channel-level open circuit detection, and outputs the upper limit value when there is an open circuit (can be configured as upper/lower overflow or a specified value). |
| Cold Junction Compensation | The module has a built-in temperature sensor and automatically performs cold junction compensation (compensation range: 0°C ~ 55°C). |
| Power Supply Voltage | DC 24V (powered through the PLC backplane bus, no additional power module is required). |
| Current Consumption | Approximately 80mA (powered from the backplane bus). |
| Protection Level | IP20 (needs to be installed in the control cabinet, in line with industrial environment standards). |
| Installation Method | DIN rail installation (35mm), supports horizontal or vertical installation, and is directly connected to the S7-1200 host. |
| Communication Interface | Communicates with the CPU through the S7-1200 backplane bus, supporting real-time data exchange. |
| Configuration Tool | TIA Portal V13 and above versions. The thermocouple type and input range need to be configured in the hardware configuration. |
| Diagnostic Function | – Channel-level fault diagnosis (open circuit, out-of-limit, configuration error); |
| – LED status indicator lights (power supply, fault). | |
| Environmental Conditions | – Operating temperature: 0°C ~ 60°C; |
| – Storage temperature: -40°C ~ +85°C; | |
| – Relative humidity: 5% ~ 95% (no condensation). | |
| Dimensions (W×H×D) | 35mm × 100mm × 110mm (compact design, saving control cabinet space). |
| Weight | Approximately 190g. |
Main FunctionsSiemens V20 Inverter 15KW of Model 6SL3210-5BE31-5UV0
- High-precision Measurement: 16-bit resolution supports high-precision temperature collection, suitable for industrial temperature monitoring scenarios (such as heating furnaces, pipeline temperature measurement).Chint converters (NVF2G-18.5/TS4 or NVF2G-18.5/PS4
- Compatibility with Multiple Types: Supports mainstream thermocouple types, no additional signal conversion module is required, simplifying the system design.
- Intelligent Diagnosis: Real-time detection of faults such as open circuits and signal out-of-limit, and feedback of status through LED and diagnostic buffer.
- Quick Configuration: Intuitively configure input parameters through TIA Portal, and support firmware update to expand functions.
Application ScenariosAB Inverter 25B-D043N114
– Industrial automation temperature control systems (such as chemical industry, metallurgy, HVAC).
– Equipment status monitoring (motor temperature, bearing temperature, etc.).
– Used in conjunction with S7-1200 PLC to build small and medium-sized measurement and control systems.
For detailed manuals, you can visit the Siemens official website, search for 6ES7231-5QA30-0XB0 to download technical documents or E-Catalog.






















