6ES7211-1AE40-0XB0 – Siemens SIMATIC S7-1200 CPU 1211C DC/DC/DC

 Quick Specifications at a Glance 

Parameter 

Specification 

Order Number 

6ES7211-1AE40-0XB0 

CPU Model 

CPU 1211C DC/DC/DC 

Digital Inputs (DI) 

6 × 24V DC (Source/Sink) 

Digital Outputs (DO) 

4 × 24V DC, 500 mA max 

Analog Inputs (AI) 

2 × 0–10V DC (10-bit resolution) 

Program / Data Memory 

50 KB RAM / 1 MB ROM 

Power Supply Voltage 

DC 20.4 – 28.8 V 

Boolean Execution Time 

0.1 µs per instruction 

Communication Port 

PROFINET / Industrial Ethernet 

Operating Temperature 

–20°C to +60°C 

Mounting 

DIN Rail (Width: 90 mm) 

Protection Class 

IP20 

Replaces / Successor of 

6ES7211-1AE31-0XB0 

 

What Is the 6ES7211-1AE40-0XB0? 

The 6ES7211-1AE40-0XB0 is a compact programmable logic controller (PLC) from Siemens, belonging to the SIMATIC S7-1200 product family. It features the CPU 1211C with a DC/DC/DC configuration — meaning it uses a 24V DC supply voltage, 24V DC digital inputs, and 24V DC transistor outputs. This makes it an ideal choice for machine-level automation tasks where fast switching, a compact footprint, and seamless PROFINET integration are essential requirements. 

As the entry-level CPU in the S7-1200 series, this controller is designed for small-to-medium automation applications. It is the direct successor to the 6ES7211-1AE31-0XB0 and is fully programmed using Siemens TIA Portal (STEP 7 V13 SP1 or higher). 

Core Features of the Siemens S7-1200 CPU 1211C 

Onboard I/O Capabilities 

The 6ES7211-1AE40-0XB0 ships with built-in I/O that reduces the need for additional modules in compact applications: 

  • 6 Digital Inputs (24V DC): Up to 3 inputs configurable as high-speed counters (HSC) at up to 100 kHz — ideal for encoder feedback and pulse counting. 

  • 4 Digital Outputs (24V DC): Transistor-based outputs supporting pulse train output (PTO) at up to 100 kHz — suitable for stepper motor and servo drive control. 

  • 2 Analog Inputs (0–10V DC): 10-bit resolution channels for direct sensor integration without requiring an additional analog signal module. 

PROFINET & Communication Flexibility 

The CPU 1211C DC/DC/DC includes an integrated PROFINET port for Ethernet-based industrial communication, supporting: 

  • PROFINET IO Controller/Device: For distributed I/O communication across the plant network. 

  • Open IE Communication: TCP/IP, ISO-on-TCP, and UDP protocols for flexible connectivity. 

  • Integrated Web Server: Remote monitoring and diagnostics via a standard web browser. 

  • Up to 3 Communication Modules (CM): Add RS-232 or RS-485 interfaces for legacy device integration. 

  • Signal Board (SB) Support: Expand inline I/O on the CPU face without extending the DIN rail footprint. 

TIA Portal Programming Support 

Programmed exclusively via Siemens TIA Portal, the 6ES7211-1AE40-0XB0 supports multiple IEC 61131-3 languages: 

  • LAD (Ladder Diagram): Familiar relay-logic style, best suited for electricians and field technicians. 

  • FBD (Function Block Diagram): Graphical representation of control logic flow. 

  • SCL (Structured Control Language): High-level text-based programming for complex algorithms and math-intensive logic. 

Applications & Industry Use Cases 

The Siemens S7-1200 CPU 1211C is trusted across a wide range of industrial sectors: 

  • Machine Automation: Conveyor systems, packing machines, and assembly lines requiring compact, reliable PLC control. 

  • Building Automation: HVAC systems, access control, and energy management applications. 

  • Process Control: Small-scale process plants requiring analog input feedback and PID control loops. 

  • Motion Control: Stepper and servo motor control leveraging the built-in PTO/PWM output functionality. 

  • OEM Equipment: Embedded automation for compact machinery where panel space is at a premium. 

Expansion Options for the S7-1200 Platform 

Despite its compact size, the 6ES7211-1AE40-0XB0 is fully scalable through the modular SIMATIC S7-1200 ecosystem: 

  • Signal Modules (SM): Add digital or analog I/O capacity using modules like SM 1221, SM 1222, SM 1231, and SM 1232. 

  • Signal Boards (SB): Mount directly on the CPU for additional I/O without extending the DIN rail footprint. 

  • Communication Modules (CM): RS-232/RS-485 serial modules for integrating legacy or third-party devices. 

  • Technology Objects: PID control, motion control axes, and high-speed counting are natively supported within TIA Portal. 

 

Where to Buy the 6ES7211-1AE40-0XB0 in India 

If you are sourcing the 6ES7211-1AE40-0XB0 Siemens SIMATIC S7-1200 CPU 1211C DC/DC/DC for your next automation project, Naksh Technology Solutions LLP is your trusted partner. As an authorized supplier and distributor of Siemens industrial automation products in India, Naksh Technology Solutions LLP offers genuine products, competitive pricing, fast delivery, and full technical support. 

Whether you need a single unit for prototyping or bulk procurement for a large project, Naksh Technology Solutions LLP has the expertise and inventory to meet your requirements. Visit nakshtechnology.com or contact the team to request a quote today. 

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