The Siemens SIMATIC S7-200 SMART CPU SR20 (6ES7288-1SR20-0AA0) is a compact and high-performance Standard PLC Controller designed for small and medium-sized industrial automation applications. It features 12 digital inputs and 8 relay outputs, providing reliable machine control, high-speed processing, and flexible expansion through Siemens S7-200 SMART expansion modules.

The CPU SR20 includes 12 KB program memory, 8 KB data memory, built-in Ethernet communication, high-speed counters, pulse outputs, PID control, Real-Time Clock (RTC), and Modbus communication capabilities. It supports STEP 7 Micro/WIN SMART programming software and is suitable for a wide range of industrial control applications.

With its AC/DC/Relay configuration, DIN rail mounting, compact design, and expandable architecture, the Siemens CPU SR20 is an ideal choice for OEM machine builders and industrial automation systems. Typical applications include packaging machines, textile machinery, conveyors, pumps, compressors, food processing equipment, water treatment systems, and factory automation.

Technical Specifications:

• Brand: Siemens
• Product Family: SIMATIC S7-200 SMART
• Model: CPU SR20
• Product Type: Standard PLC Controller
• Part Number: 6ES7288-1SR20-0AA0
• CPU Type: AC/DC/Relay
• Digital Inputs: 12 DI, 24V DC
• Digital Outputs: 8 Relay Outputs
• Total I/O Points: 20
• Program Memory: 12 KB
• Data Memory: 8 KB
• Retentive Memory: Up to 10 KB
• Ethernet Port: Built-in
• Programming Software: STEP 7 Micro/WIN SMART
• Communication: Ethernet, Modbus RTU, Modbus TCP supported
• High-Speed Counters: Supported
• Pulse Output: Supported
• PID Control: Supported
• Real-Time Clock: Built-in
• Expansion: Supports S7-200 SMART Expansion Modules
• Input Power Supply: AC 85–264V
• Mounting: DIN Rail
• Protection Rating: IP20
• Operating Temperature: 0°C to +55°C
• Dimensions: 90 × 100 × 81 mm