The Siemens SIMATIC S7-200 SMART CPU ST30 PLC (Part Number: 6ES7288-1ST30-0AA0) 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 logic functions to support a wide range of automation tasks.

The CPU features 18 digital inputs rated at 24 V DC and 12 digital transistor outputs rated at 24 V DC. It operates from a 24 V DC power supply with a permissible input range of 20.4–28.8 V DC. With 30 KB of program/data memory as specified for this model, the controller provides a flexible solution for industrial machines and automated production systems.

The Siemens S7-200 SMART platform supports programming through STEP 7 Micro/WIN SMART software. Engineers and automation technicians can use compatible programming tools to develop, configure, monitor, and maintain PLC control programs. The CPU includes Ethernet and RS-485 communication interfaces for integration with compatible automation equipment. Depending on the hardware and firmware configuration, Ethernet functions can support PROFINET and TCP/IP communication.

The ST30 CPU supports integrated automation functions such as high-speed counting, pulse output, and PID control. These functions can be useful in applications involving production sequencing, sensor monitoring, counting operations, and process regulation when correctly configured.

This PLC is suitable for packaging machinery, conveyor systems, manufacturing equipment, assembly lines, material-handling systems, and industrial control panels. Its onboard I/O and compact DIN-rail-mountable design can help simplify control-panel layouts and reduce the need for separate I/O modules in suitable applications.

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: 6ES7288-1ST30-0AA0

• 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

• Maximum Rated Output Current: 0.5 A per output under specified conditions

• 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/TCP/IP functions subject to firmware and configuration

• High-Speed Pulse Outputs: 3

• High-Speed Counter Functions: Supported

• PID Control: Supported

• Mounting Type: Standard DIN rail

• Protection Rating: IP20

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

• Approximate Weight: 375 g

• 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 automation equipment.

2. 24 V DC Power Supply: Operates within a specified 20.4–28.8 V DC input range.

3. Transistor Output Control: Supports fast switching for compatible electronic loads and control devices within the manufacturer's electrical ratings.

4. 30 KB Program/Data Memory: Offers memory capacity for suitable PLC programs and automation tasks.

5. Ethernet and RS-485 Connectivity: Supports communication with compatible PLC peripherals, HMIs, engineering systems, and other industrial devices.

6. High-Speed Control Functions: Includes supported high-speed counting and pulse-output functions for compatible applications.

7. PID Control Capability: Supports configured closed-loop control tasks for suitable industrial processes.

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

9. DIN Rail Installation: Designed for mounting inside a compatible industrial control cabinet.

10. Industrial Automation Applications: Suitable for manufacturing, packaging, conveyor control, machine sequencing, and production-line automation.

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 and switch monitoring

• High-speed counting applications

• Pulse-based control applications

• Machine sequencing and interlocking

• PID-based process control

• OEM machinery and equipment

• Factory automation and process control

• Industrial equipment monitoring

Installation and Compatibility: Before purchasing or installing the Siemens 6ES7288-1ST30-0AA0 PLC, verify the part number, power supply requirements, digital input wiring, transistor output load ratings, communication interfaces, firmware compatibility, and PLC program requirements. The CPU requires a suitable 24 V DC supply and must not be connected directly to a 120 V AC or 230 V AC power source. Transistor outputs must be used with compatible loads within the manufacturer's specified electrical ratings. Installation, wiring, commissioning, and maintenance should be performed by qualified personnel following Siemens documentation and applicable electrical safety standards.