- SIEMENS
- SIMATIC S7-300
- Analog Inputs
Sales and repairs of SIEMENS SIMATIC S7-300 analog inputs
S7-300 analog inputs – new and refurbished parts and repairs
SIMATIC S7-300 analog inputs convert sensor signals into values for the PLC. We supply modules for voltage, current and temperature measurement; supported signals depend on the specific version.

We will send a non-binding quote within 1 hour.
- Worldwide delivery
- Our own and partner parts stock
- Professional repairs
- Parts with warranty
More about selecting S7-300 analog inputs parts
S7-300 Analog Inputs for SIEMENS SIMATIC S7-300
AI analog inputs convert sensor signals for processing in the PLC. The correct selection depends primarily on the signal type, the number of channels, and the required resolution.
Typical Uses and Proper Selection
The SM 331 analog inputs are used to measure voltage, current, resistance, RTDs, and thermocouples. To ensure a proper replacement, please send us the sensor type and its range; based on that, we will verify the number of channels, resolution, isolation, and parameter settings.
Please send us the full order number, a photo of the label, and, if possible, information about the wiring or project. Based on this information, we will verify compatibility, the availability of a new or refurbished part, the possibility of repair, and a suitable replacement.
How do you choose the right model?
The most reliable method is to select the part based on the complete SIEMENS part number. When replacing a part, we recommend also verifying the hardware and firmware versions, the part’s function, the station configuration, and compatibility in TIA Portal.
- the complete order number and the desired quantity,
- the function and technical specifications of the original part,
- compatibility with the CPU, expansion modules, and the project in question.
New and refurbished parts from our warehouses
For current S7-300 parts, we primarily check the availability of new, genuine SIEMENS parts. We have access to an extensive network of industrial parts warehouses in Europe and around the world, so we can also verify the availability of remanufactured, discontinued, and hard-to-find variants.


Repairs of SIEMENS SIMATIC S7-300 Parts
You can send the defective part to FOXON for diagnosis and repair. We perform repairs at specialized repair centers in Europe, and after repair, the parts are functionally tested under load.



Frequently Asked Questions
You must verify the signal type and range, the number of channels, and the configuration in TIA Portal.
Delivery times depend on the specific part and warehouse. Thanks to our access to numerous warehouses, we can typically arrange delivery within a few days; for urgent needs, we can offer express delivery within a matter of hours. For urgent requests, call us immediately—we can arrange express delivery of selected parts day or night.
Yes. Ideally, please provide the full number from the label and the quantity you need; a photo of the label will also be helpful for replacements or repairs.

6ES7 331-7KB02-0AB0

6ES7331-1KF01-0AB0

6ES7336-4GE00-0AB0

6ES7336-1HE00-0AB0

6ES7331-7RD00-0AB0, repair and sale of PLC / CNC SIEMENS

6ES7331-1KF02-0AB0

6ES7331-7PF11-0AB0

6ES7331-7PE10-0AB0

Siemens 6ES7331-7KF02-0BA0, PLC module

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Question or Inquiry
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