PLC, PAC, & Dedicated Controllers

Siemens S7-200 SMART CPU SR30 6ES7288-1SR30-0AA0 PLC

Siemens SIMATIC S7-200 SMART CPU SR30 6ES7288-1SR30-0AA0 AC/DC/Relay PLC with 18 digital inputs, 12 relay outputs, Ethernet and RS485. View specifications and request a quote.

Siemens SIMATIC S7-200 SMART CPU SR30 6ES7288-1SR30-0AA0 AC/DC/Relay PLC

Model: CPU SR30 Part Number: 6ES7288-1SR30-0AA0 Series: SIMATIC S7-200 SMART Product Type: Programmable Logic Controller (PLC) Configuration: AC/DC/Relay Digital Inputs: 18 DI, 24 V DC Digital Outputs: 12 Relay Outputs Relay Output Capacity: Up to 2 A Power Supply: 85–264 V AC Program/Data Memory: 30 KB Programming Software: STEP 7 Micro/WIN SMART

Product Overview

The Siemens SIMATIC S7-200 SMART CPU SR30 6ES7288-1SR30-0AA0 is a compact programmable logic controller designed for small and medium-sized industrial automation and machine-control applications.

The CPU SR30 integrates 18 digital inputs and 12 relay outputs, providing more onboard I/O capacity than the SR20 while maintaining the compact architecture of the S7-200 SMART platform.

With integrated Ethernet and RS485 communication, the SR30 can be used in standalone machine control as well as networked industrial automation systems involving HMIs, variable frequency drives, remote devices and other automation equipment.

The 6ES7288-1SR30-0AA0 is especially suitable for existing S7-200 SMART systems requiring replacement, maintenance or spare PLC components.

Looking for 6ES7288-1SR30-0AA0 stock or replacement options? Send us your required quantity and destination country for quotation and availability.

Key Features

18 Integrated Digital Inputs

The CPU SR30 provides 18 onboard 24 V DC digital inputs, allowing direct connection to common industrial field devices such as sensors, push buttons, limit switches and status signals.

12 Relay Outputs

The controller includes 12 relay digital outputs, each designed for flexible control of industrial loads such as contactors, relays, indicator lamps and solenoid valves.

30 KB Program/Data Memory

The CPU SR30 provides a total of 30 KB program and data memory, offering more capacity for machine logic, process sequences and automation programs than lower-I/O models in the series.

Wide AC Power Supply

The controller supports 85–264 V AC at 47–63 Hz, making it suitable for common industrial electrical systems.

Integrated Industrial Ethernet

An onboard Ethernet interface enables communication with compatible PLCs, HMIs, engineering stations and industrial network devices.

RS485 Communication

The integrated RS485 interface provides additional serial communication capabilities for compatible field devices and automation equipment.

PROFINET Support

Depending on firmware version, the CPU SR30 supports PROFINET communication for integration into industrial Ethernet networks.

Compact DIN-Rail Design

The compact enclosure combines CPU, I/O and communication functions in a space-efficient format suitable for control cabinets and machine panels.

Technical Specifications

Specification	Details
Manufacturer	Siemens
Product Family	SIMATIC S7-200 SMART
CPU Model	CPU SR30
Article Number	6ES7288-1SR30-0AA0
Product Type	PLC CPU
Configuration	AC/DC/Relay
Supply Voltage	85–264 V AC
Supply Frequency	47–63 Hz
Digital Inputs	18
Digital Input Voltage	24 V DC
Digital Outputs	12
Output Type	Relay
Relay Output Capacity	Up to 2 A
Program Memory	18 KB
User Data Memory	12 KB
Total Program/Data Memory	30 KB
Ethernet Interface	1
Ethernet Speed	10/100 Mbps
RS485 Interface	1
RS485 Speed	Up to 187.5 kbps
PROFINET	Supported depending on firmware
Programming Software	STEP 7 Micro/WIN SMART
microSDHC Card	Optional
DIN Rail Mounting	Yes
Power Loss	Up to 14 W
Bit Operation Time	Approx. 150 ns/instruction

Communication Interfaces

Industrial Ethernet

The CPU SR30 includes an integrated industrial Ethernet interface.

Typical communication functions include:

10/100 Mbps Ethernet

RJ45 interface

S7 communication

PROFINET communication

Auto-negotiation

Auto-crossing

Communication with compatible HMIs

Communication with other PLCs

Connection to engineering computers

For supported firmware versions, the CPU can operate as a PROFINET IO Controller.

Up to 8 PROFINET IO devices can be connected under supported configurations.

RS485 Interface

The CPU SR30 also provides an integrated RS485 interface.

This can be useful when connecting compatible:

Variable frequency drives

HMIs

Instruments

Serial communication devices

Other automation equipment

The RS485 interface supports communication speeds up to approximately 187.5 kbps.

Digital Input Configuration

The SR30 includes:

18 × 24 V DC Digital Inputs

These inputs can be used for signals from:

Push buttons

Limit switches

Photoelectric sensors

Proximity sensors

Pressure switches

Level switches

Machine interlocks

Safety status signals

Position detection

Production-line feedback signals

This makes the SR30 suitable for machines requiring more onboard I/O than the SR20.

Relay Output Configuration

The CPU SR30 provides:

12 × Relay Outputs

The relay outputs can be used to control:

Contactors

Intermediate relays

Indicator lamps

Solenoid valves

Buzzers

Small motors through external contactors

Pumps

Fans

Machine actuators

Industrial control circuits

Relay outputs provide flexibility when switching different load types.

Typical Applications

The Siemens S7-200 SMART CPU SR30 is suitable for many small and medium industrial automation systems.

Typical applications include:

Packaging machinery

Conveyor systems

Filling machines

Bottling equipment

Pump control systems

Fan control systems

Material handling equipment

Textile machinery

Food processing machinery

Small production lines

Industrial control panels

Water treatment equipment

HVAC automation

Building automation

OEM machinery

Retrofit automation projects

Assembly equipment

Automated inspection systems

Small robotic work cells

Why Choose CPU SR30?

More I/O Than SR20

Compared with CPU SR20, the SR30 provides more integrated digital inputs and outputs, making it suitable for machines requiring additional control points without immediately adding expansion modules.

Integrated Communication

Ethernet and RS485 interfaces provide flexible communication options for automation systems.

Relay Output Flexibility

Twelve relay outputs make the CPU suitable for applications involving contactors, relays and other switched loads.

Compact Control Solution

Integrated CPU, communication and I/O help reduce panel space and wiring complexity.

Expandable S7-200 SMART Platform

Additional S7-200 SMART expansion modules can be added when the application requires more digital, analog or communication I/O.

Suitable for Existing Installations

The 6ES7288-1SR30-0AA0 is valuable for maintenance and replacement of existing S7-200 SMART systems.

CPU SR20 vs CPU SR30

Feature	CPU SR20	CPU SR30
Digital Inputs	12	18
Relay Outputs	8	12
Program/Data Memory	20 KB	30 KB
Ethernet	Yes	Yes
RS485	Yes	Yes
Supply Type	AC	AC
Output Type	Relay	Relay
Typical Use	Small machines	Small to medium machines

If your application requires more onboard I/O than the SR20 provides, the CPU SR30 is often the better choice.

CPU SR30 vs SR40 vs SR60

The S7-200 SMART SR series allows users to select a CPU based on required onboard I/O.

CPU SR20 Best suited to smaller machine-control applications.

CPU SR30 Provides a balanced combination of compact size and increased I/O capacity.

CPU SR40 Suitable for systems requiring more integrated inputs and outputs.

CPU SR60 Designed for larger small-machine and medium automation applications with greater onboard I/O requirements.

This comparison structure should also link internally to your individual SR20, SR40 and SR60 product pages.

Expansion Options

The S7-200 SMART platform supports compatible expansion modules for systems requiring additional functionality.

Typical module categories include:

Digital Input Modules

Digital Output Modules

Digital I/O Modules

Analog Input Modules

Analog Output Modules

Analog I/O Modules

Temperature Modules

Communication Modules

Signal Boards

Compatible Automation Products

CPU SR30 can be used as part of an industrial automation system with compatible:

S7-200 SMART expansion modules

Human Machine Interfaces

Variable Frequency Drives

Servo drives

Industrial power supplies

Industrial Ethernet devices

Sensors

Relays

Contactors

Circuit breakers

Control cabinets

Replacement & Spare Part Information

Article Number: 6ES7288-1SR30-0AA0

For customers maintaining an existing S7-200 SMART installation, this model may be required as a replacement or spare PLC CPU.

Before ordering a replacement, we recommend confirming:

Complete part number

Existing hardware version

Firmware version

Electrical configuration

Existing PLC program compatibility

Required quantity

Destination country

Send us a clear photo of your existing PLC nameplate if you are unsure which model you need.

Ordering Information

Product: Siemens SIMATIC S7-200 SMART CPU SR30 Model: CPU SR30 Article Number: 6ES7288-1SR30-0AA0 Configuration: AC/DC/Relay Digital Inputs: 18 Relay Outputs: 12 Supply: 85–264 V AC Availability: Contact us Shipping: Worldwide Quotation: Available on request

For faster quotation, please send:

Part number

Required quantity

Destination country

Required delivery date

Frequently Asked Questions

What is 6ES7288-1SR30-0AA0?

6ES7288-1SR30-0AA0 is the article number for the Siemens SIMATIC S7-200 SMART CPU SR30 AC/DC/Relay PLC.

How many inputs does CPU SR30 have?

The CPU SR30 provides 18 integrated 24 V DC digital inputs.

How many outputs does CPU SR30 have?

The controller includes 12 integrated relay outputs.

What type of outputs does SR30 use?

CPU SR30 uses relay outputs.

For applications requiring transistor outputs, users should compare the corresponding S7-200 SMART ST-series CPU.

What is the power supply of CPU SR30?

The 6ES7288-1SR30-0AA0 supports an input range of approximately 85–264 V AC at 47–63 Hz.

How much memory does CPU SR30 have?

The controller provides approximately 30 KB combined program and data memory.

Does CPU SR30 support Ethernet?

Yes. The CPU includes one integrated industrial Ethernet interface.

Does CPU SR30 support PROFINET?

Supported firmware versions provide PROFINET functionality. PROFINET IO Controller support was introduced beginning with firmware V2.4.

Does CPU SR30 have RS485?

Yes. The CPU includes one integrated RS485 interface.

Which software is used to program CPU SR30?

The S7-200 SMART family is engineered using STEP 7 Micro/WIN SMART.

Is CPU SR30 suitable for machine automation?

Yes. It is commonly used in small and medium machine-control applications requiring integrated I/O and industrial communication.

What is the difference between SR20 and SR30?

The SR30 provides more integrated I/O and more program/data memory than the SR20.

Can you supply CPU SR30 together with expansion modules?

Compatible S7-200 SMART modules and related automation components can be supplied depending on availability.

Send your part number list or BOM for quotation.

Need Siemens S7-200 SMART Parts?

Looking for S7-200 SMART PLC CPUs, expansion modules, HMIs or automation components?

Send us your model numbers or BOM list.

We can help source:

CPU SR20

CPU SR30

CPU SR40

CPU SR60

CPU ST20

CPU ST30

CPU ST40

CPU ST60

S7-200 SMART I/O modules

Communication modules

HMIs

Variable frequency drives

Industrial automation components

Send your required part number and quantity for a quotation.