Siemens 6ES7211-1HE40-0XB0 Entry-Level PLC CPU

Start your automation project with this reliable and affordable CPU. It has relay outputs to control AC and DC devices easily.

Perfect For Your First Project

• Relay outputs can switch both AC and DC power.
• Built-in analog inputs for sensor readings.
• Simple 24V DC power supply connection.
• Compact size saves valuable cabinet space.
• Easy to program with Siemens TIA Portal software.

Detailed Product Specifications

Brand: Siemens
Order Number: 6ES7211-1HE40-0XB0
Product Name: SIMATIC S7-1200 CPU 1211C DC/DC/Relay
Type: Basic Compact PLC with Relay Outputs
Onboard I/O:
- Digital Inputs (DI): 6 points, 24V DC
- Digital Outputs (DO): 4 points, Relay, 2A (AC/DC)
- Analog Inputs (AI): 2 points, 0-10V DC
Communication: 1 x PROFINET Port (RJ45)
Power Supply: DC 20.4 - 28.8 V DC
Program Memory: 75 KB
Load Memory: 1 MB (expandable with memory card)
Digital Output Type: Electro-mechanical Relay
Relay Contact Rating: 2A @ 24V DC or 230V AC
High-Speed Counters (HSC): Up to 100 kHz
Operating Temperature: -20°C to 60°C
Dimensions (W x H x D): 90 x 100 x 75 mm
Weight: Approx. 380 g
Expansion: Up to 3 communication modules + 1 signal board
Required Software: STEP 7 (TIA Portal) V17 or higher
Certifications: cULus, CE, RoHS, RCM, KC

What You Get

Your order includes: 1 x Siemens 6ES7211-1HE40-0XB0 CPU 1211C unit.

Our Quality Promise

We provide a 12-month warranty for guaranteed performance and reliability.

Fast Shipping Services

Choose from FedEx, UPS, or DHL for quick and tracked delivery to your location.

Installation & Usage FAQ

What is the biggest benefit of relay outputs?

They are versatile. You can use the same output to control a 24V DC solenoid valve or a 230V AC light bulb without extra components.

Can I connect a 4-20mA sensor to the analog inputs?

Not directly. The inputs are 0-10V only. For a 4-20mA sensor, you need to add a 500-ohm resistor in parallel to convert the signal to voltage.

How many devices can I connect to the PROFINET port?

You can connect it to a network with many devices, but as an IO Controller, it can directly manage up to 16 IO Devices.

Is the memory enough for a simple machine?

Absolutely. The 75 KB work memory is plenty for programming sequences, timers, counters, and basic logic for a small to medium machine.

What's the main use for the high-speed counters?

They are perfect for counting fast pulses from devices like rotary encoders on a conveyor belt to measure speed or position.

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