28.8VDC SIMATIC S7 200 Smart PLC 6ES7288-1ST40-0AA2 ST40 (DC/DC/DC) CPU

SIMATIC S7-200 SMART PLC 6ES7288-1ST40-0AA2 ST40 (DC/DC/DC) CPU

I. Product Description:

The SIMATIC 6ES7288-1ST40-0AA2 is a standard ST40 (DC/DC/DC) CPU from SIMATIC’ SIMATIC S7-200 SMART series, It features a transistor-output design, with 24 digital inputs (DI) and 16 digital outputs (DO) (24 VDC) built in, supports 3-axis 100 kHz high-speed pulse output, and integrates PROFINET Ethernet and RS-485 serial ports. It can be expanded with up to 16 modules to support 248 I/O points, making it suitable for the logic control and positioning needs of small- and medium-sized automation equipment.

II. Product Specifications:

SIMATIC 6ES7288-1ST40-0AA2｜SIMATIC S7-200 SMART CPU ST40 DC/DC/DC

Rated Supply Voltage: 24 V DC;
Permitted Supply Voltage Range: 20.4 to 28.8 V DC;
Digital Inputs: 24 × 24 V DC;
Digital Outputs: 16 × 24 V DC transistor outputs;
Output Type: Transistor;
High-Speed Counters: 8;
High-Speed Counter Frequency: Up to 200 kHz per channel;
Pulse Outputs: 5;
Pulse Output Frequency: Up to 200 kHz;
Motion Control: Supported;
PID Loops: Up to 16;
Program Memory: 80 KB;
User Data Memory: 80 KB;
Retentive Memory: Up to 40 KB;
DB2 Memory: Up to 1 MB;
Integrated Ethernet Interface: 1 × Ethernet interface;
Ethernet Communication: PROFINET and Industrial Ethernet communication supported;
Ethernet Transmission Rate: 10/100 Mbit/s;
Communication Protocols: TCP/IP, PROFINET, S7 communication, and Modbus TCP;
RS485 Interface: Integrated RS485 communication interface;
Serial Communication: PPI and Freeport communication supported;
Expansion Modules: Up to 8 expansion modules;
Signal Boards: Up to 2 signal boards;
Real-Time Clock: Integrated with 7-day backup;
Sensor Power Supply: Up to 300 mA at 24 V DC;
Digital Input Current Consumption: Approximately 4 mA per input used;
EM Bus Current Capacity: Up to 1800 mA at 5 V DC;
Typical Power Dissipation: Approximately 24 W;
Engineering Software: STEP 7-Micro/WIN SMART;
Programming Languages: LAD, FBD, STL, and SCL;
Communication Functions: Ethernet communication, PPI communication, Freeport communication, Modbus communication, and user-defined communication;
Diagnostic Functions: Integrated system diagnostics and status monitoring;
Protection Functions: User access protection and security functions supported;
Mounting: DIN rail mounting or direct panel mounting;
Protection Rating: IP20;
Operating Temperature: -20 to 55 °C;
Storage / Transport Temperature: -40 to 70 °C;
Maximum Relative Humidity: 95%, non-condensing;
Dimensions (W × H × D): Approximately 125 × 100 × 81 mm;
Net Weight: Approximately 422.8 g;
Typical Applications: Machine automation, motion control, conveyor systems, packaging equipment, production lines, process control, high-speed counting, pulse control, industrial communication, and SIMATIC S7-200 SMART automation systemsIII. Technical Parameters:
SIMATIC S7-200 SMART, CPU ST40, CPU V3.0, DC/DC/DC, On-board I/O: 24 x 24 V DC digital inputs; 16 x 24 V DC digital outputs; Power supply: 20.4–28.8 V DC; Program memory/data memory: 80 KB; Motion control functions, CAM, gear reducer; Supports web serverIV. Industries Served:
SIMATIC 6ES7288-1ST40-0AA2 Packaging Machinery: Multi-axis positioning control for bag-making, filling, sealing and cutting, labeling, and stretch-wrapping machines;
Machine Tools and Engraving Equipment: Precision motion control for small CNC machine tools and laser engraving machines;
Food and Beverage: Automated control of filling, sorting, and conveyor lines;
Textile Machinery: Logic and speed control for spinning, weaving, and dyeing equipment;
Water Treatment: Pump and valve control, liquid level monitoring, and water quality parameter adjustment;
Logistics and Warehousing: Control of conveyor lines, sorting systems, and lift racks;
Heating, Ventilation, and Air Conditioning (HVAC): Automation of building air conditioning, fresh air systems, and ventilation equipment;
Small-Scale Custom Automation: Various customized standalone machines and small-scale production lines.

V. Why choose us?

We source directly from China’s Tier 1 channels, eliminating all middleman markups. This means you get competitive prices close to factory cost, and we pass those savings on to you as profit or budget flexibility for your projects.

Don’t let stockouts slow down your project schedule. For popular models like the S7-1500 and G120, which are frequently purchased, we always maintain high levels of in-stock inventory. The moment you place your order, the goods are already ready in our warehouse. Within 1–3 business days, you’ll receive the tracking number for your international express shipment. Whether your factory is in the Middle East, Southeast Asia, or across Europe and the Americas, our global logistics network helps you reclaim valuable time.

From precision manufacturing in Europe to oil and gas fields in the Middle East, and electronics assembly lines in Southeast Asia, our products and solutions have withstood the test of demanding operating conditions around the world. We deeply understand the unique characteristics of each market, and this global experience is the guarantee of your project’s successful implementation. 

We don’t just sell products—we provide the technical support that keeps your equipment running smoothly. Whether you’re facing challenges with product selection, encountering commissioning errors, or dealing with unexpected failures, our technical team is always on standby to ensure your production line issues receive a professional response—not just a voicemail.

VI. FAQ:

1,Are the products all genuine? Is the quality guaranteed?

Our products are 100% guaranteed quality, 100% guaranteed authentic, regular channel, you can buy with confidence. Each product can be checked for authenticity, all from major genuine brands, if you have any questions, please feel free to contact our after-sales service. 

2. What should I do if I can't find what I want?

You can do an exact/fuzzy search based on the product model or brand. If you still can't find it, you can feedback the model number or brand of the desired product to our sales staff.
3,How to buy the product?

Contact our sales professionals online. A variety of contact options are available:

WhatsAPP: +8618998494501

WeChat: Susan20241118

E-mail: info@szlyzn.com

Or click on the Contact Us page, enter your name, email, phone number and specific request, submit it to our customer service and we will contact you within 24 hours.