The SIEMENS SIMATIC S7-200 SMART CPU ST20 is a compact, high-performance PLC delivering robust automation control. This standard CPU features 12 digital inputs and 8 digital relay outputs onboard, providing immediate I/O for small to mid-sized applications. Its integrated PROFINET interface enables fast, straightforward communication and programming for streamlined system integration. Features and Benefits
- 12 Digital Inputs (24V DC) and 8 Digital Relay Outputs - Provides a ready-to-use I/O count for controlling sensors, actuators, and small motors directly, reducing the need for immediate expansion.
- Integrated PROFINET Interface - Enables high-speed communication for programming, HMI connection, and data exchange with other devices on a modern industrial network.
- Compact and Space-Saving Design - The CPU ST20's small footprint allows for easy installation in control cabinets with limited panel space.
- S7-200 SMART System Compatibility - Seamlessly integrates with a wide range of digital and analog signal modules, communication modules, and accessories for scalable system design. Applications
- Small Machine Control - Ideal as the central controller for packaging machines, conveyor systems, or pick-and-place units.
- Building Automation - Perfect for managing lighting control, HVAC subsystems, or access control panels in commercial facilities.
- Process Control Stations - Well-suited for controlling batching systems, small pumping stations, or laboratory equipment.
Dimensions (W x H x D): 90 x 100 x 81 mm. Weight: 415 g. Power Supply Voltage: 20.4 - 28.8 V DC. Power Consumption: 10 W. Onboard Digital Input Voltage: 24 V DC. Onboard Digital Output Voltage: 24 V DC. CPU Type: Standard. Program Memory: 12 KB. Data Memory: 8 KB. Bit Processing Speed: 0.15 µs. Expansion Modules (Max): 6. Integrated Analog Potentiometer: 1. Integrated Ethernet Port: 1. Integrated Real-Time Clock: Yes. Integrated RS485 Port: 1. Onboard Digital Inputs: 12. Onboard Digital Output Type: Relay. Onboard Digital Outputs: 8. Operating Temperature: 0 to 55 °C. Product Article Number: 6ES7288-1ST20-0AA1. Product Name: SIMATIC S7-200 SMART CPU ST20. Protection Class: IP20. Relative Humidity: 95% at 25 °C (non-condensing). Operating Voltage: 20.4 - 28.8 V DC. Power Consumption (Typical): 11 W. Digital Output Type: 24 V DC Transistor (Sourcing). High-Speed Counters: 4 single-phase (100 kHz) or 2 A/B phase (80 kHz). Onboard Digital Outputs: 8. Program Execution Speed: 0.15 µs/Boolean instruction. Pulse Outputs: 2 (up to 100 kHz). Retentive Memory Range: 256 bytes for timers, counters, and data. Communication Ports: 1 x Ethernet (10/100 Mbps), 1 x RS485. CPU Model: ST20. Data Memory: 8 KB. Digital Input Type: 24 V DC Sink/Source. Expansion Capability: Up to 6 expansion modules. Onboard Digital Inputs: 12. Order Number: 6ES7288-1ST20-0AA1 (Alternative: 6ES72881ST200AA1). Product Family: SIMATIC S7-200 SMART. Product Type: Standard CPU Module. Program Memory: 12 KB. Programming Software: STEP 7-Micro/WIN SMART. Real-Time Clock: Integrated with battery backup. Q: What are the onboard I/O specifications for the SIEMENS SIMATIC S7-200 SMART CPU ST20? A: The SIEMENS SIMATIC S7-200 SMART CPU ST20 features 12 digital inputs (DI) and 8 digital outputs (DQ), all rated for 24 V DC. This onboard configuration provides a solid foundation for controlling a variety of sensors and actuators in compact automation tasks.. Q: How durable is the SIEMENS SIMATIC S7-200 SMART CPU for industrial environments? A: As a Siemens SIMATIC product, the S7-200 SMART CPU ST20 is engineered for professional industrial use with high durability. It is built to withstand typical electrical noise, vibration, and temperature variations found in factory and machinery settings.. Q: Can the S7-200 SMART CPU ST20 be used for small machine control applications? A: Yes, the SIEMENS S7-200 SMART CPU ST20 is perfectly suited for small machine control. With its 12 DI/8 DQ onboard I/O and expandability via signal modules, it is a common choice for standalone machines, conveyor sections, and basic process control.. Q: What is the warranty for the SIEMENS SIMATIC S7-200 SMART CPU ST20? A: Siemens typically provides a standard manufacturer's warranty for its SIMATIC S7-200 SMART PLCs. For the exact warranty period and terms for the CPU ST20 model, please verify with the seller or Siemens' official documentation at the time of purchase.. Q: Does the SIEMENS S7-200 SMART CPU ST20 offer good value compared to other PLCs? A: Yes, the SIEMENS SIMATIC S7-200 SMART CPU ST20 offers excellent value, providing professional Siemens quality and reliability at a competitive price point. It delivers robust performance and the trusted SIMATIC ecosystem, making it a smart investment for both small-scale automation and entry-level professional applications..