Industrial Automation

Compatible replacements for SIMATIC S7-300 and S7-200 modules

Looking for a more affordable replacement for a SIEMENS SIMATIC S7-300 or S7-200 module? We offer compatible I/O modules, power supplies, accessories and memory cards from SOFTLINK and VIPA.

Digital I/O Modules

Digital inputs and outputs for sensors, pushbuttons, valves and other 24 V DC signals.

Analog I/O Modules

Analog inputs and outputs for voltage, current, temperature and other process variables.

Power Supplies, Accessories and Memory Cards

Additional components for repair and long-term maintenance of SIMATIC S7 systems.

Compatible ReplacementsFor specific SIEMENS and VIPA order numbers
Save More Than 50%On selected types compared with the original part
Stock in LiberecSelected modules available for immediate delivery
Compatibility CheckVerification of order number and parameters

Find a replacement by order number

Use the SIEMENS, SOFTLINK and VIPA comparison table. When in doubt, send us the complete order number of the original module or a photo of its nameplate.

Open the comparison table Verify a compatible replacement
How to select the correct SIMATIC S7 replacement module

Which replacements are available in this category?

Digital Modules

Replacement digital inputs and outputs for sensors, pushbuttons, valves, contactors and other 24 V DC digital signals.

Analog Modules

Replacement analog inputs and outputs for measuring and controlling voltage, current, temperature, pressure, flow and other process variables.

Power Supplies and Accessories

Power supplies, connectors, interconnection components, memory cards and other parts for maintaining SIMATIC S7 systems.

Comparison table of SIEMENS, SOFTLINK and VIPA order numbers

What should be checked before ordering?

Order number Always check the complete order number of the original module, for example 6ES7321-1BL00-0AA0. A difference in a single character can indicate a different electrical or functional version.
PLC series Verify whether the module is intended for SIMATIC S7-300, S7-200 or another series. Modules from different systems are not interchangeable.
Signal type Check whether it is a digital input DI, digital output DO, analog input AI, analog output AO or a combined module.
Number of channels The replacement must match the number of inputs and outputs, their wiring and the addressing method used in the PLC configuration.
Voltage and current For digital modules, verify voltage, maximum current, output type and any galvanic isolation. For analog modules, check supported current, voltage and temperature signals.
Connector and wiring Mechanical dimensions, front connector and terminal assignment must correspond to the original module. This can minimise modifications to the control cabinet and cabling.
PLC configuration A direct compatible replacement usually does not require a program change. However, the station configuration, diagnostic functions and specific application parameters must always be verified.

Why use a compatible replacement?

Older original SIMATIC S7-300 and S7-200 modules may be expensive, difficult to obtain or discontinued. A compatible module can extend the life of a machine without the need for an immediate migration of the entire control system. Selected types can also significantly reduce the cost of the spare part.

Is a compatible replacement an original SIEMENS product?

No. It is an alternative component from another manufacturer designed to replace a specific SIEMENS or VIPA module. We therefore always verify the order number and important technical parameters before ordering.

Does the PLC program need to be changed?

For a direct replacement of a specific order number, a program change is generally not required. However, this depends on the station configuration, the module used, diagnostic functions and wiring. The suitability of the replacement should be verified before installation.

What if no compatible replacement exists for my module?

We will check the availability of a new original, refurbished or discontinued SIEMENS part. For selected types, we may also offer professional repair of the original module or recommend a suitable modernisation approach.

Can the replacement also be used instead of a VIPA module?

For selected types, yes. The exact VIPA designation, electrical parameters, number of channels, connector wiring and PLC configuration must be compared. We will verify compatibility before ordering.

SIEMENS and SIMATIC are trademarks of their respective owners. The compatible replacements offered are not original Siemens products unless explicitly stated otherwise for a specific product.

Select a replacement for SIMATIC S7

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Since 2006, FOXON has been a trusted partner in industrial automation. We supply spare parts, industrial products and solutions for data collection, industrial network diagnostics and the digitalization of manufacturing plants. We also provide professional training, technical support and complete project implementation – from initial design through commissioning.
Compatibility of SIEMENS, SOFTLINK and VIPA replacements for SIMATIC S7-300 and S7-200

Compatibility of SIEMENS, SOFTLINK and VIPA replacements for SIMATIC S7-300 and S7-200

Save more than 50% compared to the price of original SIEMENS SIMATIC S7-300 and S7-200 I/O modules, power supplies and memory cards. The clear compatibility table helps you find suitable SOFTLINK and VIPA replacements by the order number of the original SIEMENS part. Selected modules are in stock at FOXON in Liberec and can be delivered immediately.

Question or Inquiry

Are you looking for a spare part, a repair, one of our products, or do you need to check availability or get advice on a technical solution? Send us the order number, a photo of the nameplate, or a brief description of your request. We will usually get back to you within one hour during business hours.

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