6ES7288-1ST40-0AA1 | SIMATIC S7-200 SMART ST40 - Features, Specs & Benefits

 The 6ES7288-1ST40-0AA1 is a powerful PLC CPU module from the Siemens SIMATIC S7-200 SMART series, designed to deliver reliable and efficient automation control for small-to-medium industrial systems. With built-in I/O, strong processing capacity, and support for modern communication protocols, this CPU is a go-to choice for compact machine logic and OEM automation needs.  

What Is the 6ES7288-1ST40-0AA1? 

The 6ES7288-1ST40-0AA1 is a SIMATIC S7-200 SMART CPU ST40 module featuring integrated digital inputs and outputs along with onboard processing memory. It is engineered to handle a wide range of automation tasks with efficiency and flexibility.  

This CPU unit is part of Siemens’ S7-200 SMART lineup, a family of compact programmable logic controllers (PLCs) that balance performance and cost-effectiveness for industrial control applications. 

Key Specifications 

  • Model: 6ES7288-1ST40-0AA1 

  • Product Type: SIMATIC S7-200 SMART CPU ST40 

  • I/O Configuration: 24 digital inputs + 16 digital outputs (24 V DC)  

  • Power Supply: DC 20.4–28.8 V  

  • Program/Data Memory: 40 KB  

  • Mounting: Standard DIN rail installation  

  • Engineering Package: STEP 7 Micro/WIN SMART for easy programming  

These features make the ST40 CPU suitable for demanding tasks while maintaining a compact and efficient footprint. 

Why Choose the 6ES7288-1ST40-0AA1? 

High-Performance Control 

The ST40 CPU offers a generous memory size and fast processing that can handle complex control logic, real-time response, and fast scanning cycles.  

Integrated I/O 

With 24 digital inputs and 16 digital outputs, this CPU reduces the need for extra extension modules, saving cost and cabinet space.  

Easy Integration & Programming 

Engineered to work with STEP 7 Micro/WIN SMART, this module enables rapid project setup, testing, and deployment for control engineers.  

Reliable & Compact 

The rugged design and DIN-rail mounting make it ideal for industrial cabinets where space and durability are important. 

Typical Applications 

The 6ES7288-1ST40-0AA1 CPU is commonly used in: 

  • Machine Automation: Packaging, robotics control, conveyor systems 

  • Manufacturing Lines: Logic control in assembly or small production units 

  • OEM Equipment: PLC brains for custom machinery 

  • System Upgrades: Replacing outdated controllers with modern PLC technology 

Its onboard capabilities make it flexible for both new installations and retrofit projects. 

Programming & Integration Tips 

To get the best results: 

  • Use STEP 7 Micro/WIN SMART for easy configuration and ladder logic programming.  

  • Keep wiring tidy and follow Siemens guidelines for digital inputs/outputs to avoid noise interference. 

  • Regularly back up program logic to prevent data loss during firmware updates. 

Conclusion 

The 6ES7288-1ST40-0AA1 CPU from the SIMATIC S7-200 SMART series offers a well-balanced mix of performance, I/O capacity, and connectivity, ideal for compact automation tasks and industrial control logic. For trustworthy sourcing, competitive pricing, and expert support on this Siemens PLC and other automation products, contact Naksh Technology Solutions LLP, your reliable partner for industrial automation solutions. 

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