- SIEMENS
- SIMATIC S7-300
- Digital Inputs / Outputs
Sales and repairs of SIMATIC S7-300 digital inputs / outputs
S7-300 digital inputs and outputs – new and refurbished parts and repairs
SIMATIC S7-300 digital I/O modules connect the PLC to the machine’s binary inputs and outputs. We supply input and output modules to suit the wiring and required functions.

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 digital inputs and outputs parts
S7-300 Digital Inputs/Outputs for SIEMENS SIMATIC S7-300
Combined DI/DQ modules save space in the control cabinet and combine input and output channels for binary signals.
Typical Uses and Proper Selection
Combined digital modules contain both input and output channels. When replacing them, we will verify the number of DI and DQ channels, voltage, output current load, switching type, and front connector configuration.
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 new or refurbished parts, the possibility of repair, and suitable replacements.
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 also recommend verifying the hardware and firmware versions, the part’s function, the station configuration, and compatibility in TIA Portal.
- the complete order number and the quantity requested,
- 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 refurbished, discontinued, and harder-to-find options.


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
Yes, this is possible in some configurations; however, it is necessary to verify the space, wiring, and adjustments to the project configuration.
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, provide the full number from the label and the desired quantity; a photo of the label will also be helpful for replacements or repairs.

6ES7323-1BL00-0AA0

6ES7323-1BH81-0AA0

6ES7323-1BH80-0AA0

6ES7323-1BH01-0AA0

6ES7323-1BH00-0AA0

6ES7327-1BH00-0AB0

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Question or Inquiry
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