The Siemens SIMATIC S7-200 SMART CPU ST30 (Part Number: 6ES7288-1ST30-0AA1) is a compact programmable logic controller designed for industrial automation, machine control, and manufacturing applications. This standard DC/DC/DC CPU combines integrated digital inputs and transistor outputs with programmable control functions, making it suitable for a variety of industrial automation systems.

The CPU provides 18 digital inputs rated at 24 V DC and 12 digital transistor outputs rated at 24 V DC. It operates with a 24 V DC power supply within a permissible range of 20.4–28.8 V DC. The controller has 30 KB of program/data memory and supports web server functionality, providing useful capabilities for compatible automation and monitoring applications.

The Siemens S7-200 SMART platform supports programming through STEP 7 Micro/WIN SMART software. Engineers and technicians can use compatible programming tools to create, configure, monitor, and maintain PLC programs. The CPU includes Ethernet with PROFINET functionality and an RS-485 interface for communication with compatible industrial equipment, HMIs, engineering systems, and other automation devices.

Its transistor outputs support fast switching and high-speed pulse output functions for compatible applications. Integrated high-speed counters and PID control functions can also support machine sequencing, counting, and process regulation when properly configured.

The Siemens ST30 PLC is suitable for packaging machinery, conveyor systems, manufacturing equipment, assembly lines, material-handling systems, and industrial control panels. Its integrated I/O, compact design, and industrial communication capabilities make it a practical option for automation projects requiring reliable digital control and system connectivity.

Technical Specifications:

• Brand: Siemens

• Product Family: SIMATIC S7-200 SMART

• Product Type: Programmable Logic Controller (PLC)

• CPU Model: ST30

• CPU Type: Standard CPU, DC/DC/DC

• Order Number: 6ES7288-1ST30-0AA1

• Power Supply: 24 V DC

• Permissible Supply Voltage: 20.4–28.8 V DC

• Maximum Current Consumption: 624 mA at 24 V DC

• Digital Inputs: 18

• Digital Input Voltage: 24 V DC

• Digital Outputs: 12 transistor outputs

• Digital Output Voltage: 24 V DC

• Output Current: Verify the applicable output rating in the official datasheet for the exact hardware revision

• Program/Data Memory: 30 KB

• Programming Software: STEP 7 Micro/WIN SMART

• Communication Interfaces: 1 Ethernet interface and 1 RS-485 interface

• Ethernet Connector: RJ45

• Ethernet Communication: PROFINET and supported Ethernet communication functions

• High-Speed Pulse Outputs: 3, with pulse-output functions up to 100 kHz as specified

• High-Speed Counter Functions: Supported

• PID Control: Supported

• Web Server: Supported

• Mounting Type: Standard DIN rail

• Protection Rating: IP20

• Dimensions (W × H × D): Approximately 110 × 100 × 81 mm

• Approximate Weight: 375 g

• Main Application: Industrial automation and machine control

Key Features and Benefits:

1. Integrated Digital I/O: Provides 18 digital inputs and 12 transistor outputs for compatible industrial equipment.

2. 24 V DC Operation: Designed for industrial control systems using a compatible 24 V DC supply.

3. High-Speed Transistor Outputs: Supports fast switching and pulse-output functions for compatible control applications.

4. 30 KB Program/Data Memory: Provides memory resources for suitable automation programs and data.

5. Ethernet and PROFINET Communication: Enables integration with compatible automation devices and industrial networks.

6. RS-485 Interface: Supports communication with compatible industrial devices and serial communication systems.

7. Web Server Functionality: Provides supported browser-based access and diagnostic capabilities, depending on configuration and firmware.

8. High-Speed Counting and PID Control: Supports specialized control tasks when properly configured in the PLC program.

9. Flexible PLC Programming: Compatible with STEP 7 Micro/WIN SMART software.

10. Compact DIN Rail Design: Designed for installation in compatible industrial control cabinets.

Applications:

• Industrial machine automation

• Manufacturing and assembly lines

• Packaging and filling machinery

• Conveyor belt control systems

• Automated production equipment

• Material-handling systems

• Industrial control panels

• Digital sensor monitoring

• High-speed counting applications

• Pulse-based control applications

• Machine sequencing and interlocking

• PID-based process control

• OEM machinery and equipment

• Factory automation

• Industrial monitoring and control

Installation and Compatibility: Before purchasing or installing the Siemens 6ES7288-1ST30-0AA1 PLC, verify the order number, power supply requirements, input wiring, transistor output ratings, communication protocols, firmware version, and PLC program compatibility. The CPU requires a suitable 24 V DC supply and must not be connected directly to 120 V AC or 230 V AC power. Ensure all connected loads comply with the manufacturer's electrical ratings. Installation, wiring, commissioning, and maintenance should be performed by qualified personnel following Siemens documentation and applicable electrical safety standards.