Siemens 6ES7288-1ST40-0AA0 SIMATIC S7-200 SMART CPU ST40

6ES72881ST400AA0 – The SIMATIC S7-200 SMART CPU ST40 is a compact programmable logic controller featuring 24 digital inputs and 16 digital outputs, ideal for cost-efficient automation. With a DC power supply, it integrates onboard I/O and offers 40 KB of combined program/data memory. This model has been discontinued since 01.10.2021 and replaced by the updated 6ES7288-1ST40-0AA1 with enhanced functionality.

Technical Specifications

• Model: 6ES7288-1ST40-0AA0 Siemens
• Series: SIMATIC S7-200 SMART
• CPU Type: ST40
• Digital Inputs: 24 DI @ 24 V DC
• Digital Outputs: 16 DO @ 24 V DC
• Power Supply: DC 20.4–28.8 V
• Memory: 40 KB (Program/Data combined)
• I/O Type: Onboard integrated
• Control Voltage Type: DC/DC/DC
• Net Weight: 0.490 kg
• Dimensions (H×W×D): 134 × 157 × 113 mm
• Country of Origin: China
• Lifecycle Status: Product cancellation since 01.10.2021
• Successor: 6ES7288-1ST40-0AA1

Function & Application

Purpose: The S7-200 SMART CPU ST40 delivers reliable automation in a small form factor, with integrated digital I/Os suited for standalone or small distributed systems. A practical choice for compact machine control, it supports fast signal processing for typical industrial automation needs.

Typical Applications:

• Entry-level automation systems
• Compact machines and conveyors
• Replacement/maintenance of legacy S7-200 SMART systems
• I/O-dense applications requiring DC control

Performance & Features

• 24 DI / 16 DO Built-In. Onboard digital I/O reduces wiring and panel space.
• DC Power Operation. Compatible with 20.4–28.8 V DC supplies.
• Compact Form Factor. Space-saving design for electrical enclosures.
• 40 KB Memory. Sufficient for small to mid-level logic programs.
• Drop-in Spare Part. Seamless replacement in existing ST40-based systems.

6ES7288-1ST40-0AA0 Compliance & Classification

• RoHS Compliance: Since 27.08.2012
• WEEE Take-Back Obligation: Yes

REACH Substances:

• Lead (CAS 7439-92-1) > 0.1%
• Lead monoxide (CAS 1317-36-8) > 0.1%
• 6,6′-di-tert-butyl-2,2′-methylenedi-p-cresol > 0.1%
• Commodity Code: 85371091
• Catalog ID: ST72-CN
• Product Group: 4050
• Group Code: R131
• Product Class: A – Returnable stock item
• EAN: 6940408101449

Key Features & Benefits:

✅ Integrated 24 DI / 16 DO. Saves cost and cabinet space.

✅ DC/DC/DC Power Type. Simple integration with low-voltage systems.

✅ Legacy Support. Spare part for existing S7-200 SMART deployments.

✅ Compact Automation Platform. Ideal for machines and microcontrollers.

✅ Successor Available. Upgrade to 6ES7288-1ST40-0AA1 with added web server support.

📦 Order Today for Fast UK & Europe Delivery!

At Drive Outlet Megastore, we offer the most competitive Siemens 6ES7288-1ST40-0AA0 prices, ready to dispatch while stocks last for legacy system support across the UK and Europe.

Looking for help with S7-200 SMART migrations, CPU replacements, or upgrading to the new ST40? Speak to our Siemens automation team today.

Maintain your legacy systems – with Siemens and Drive Outlet Megastore.