Technical Specifications for 6ES7211-1HE40-0XB0
Model Number: Siemens 6ES7211-1HE40-0XB0
Product Series: SIMATIC S7-1200
CPU Model: CPU 1211C
CPU Type: Compact CPU
Type Code: DC/DC/Relay
Power Supply: DC 20.4~28.8V (Nominal 24V DC)
Digital Inputs: 6 DI, 24V DC
Digital Outputs: 4 DO, Relay Contact Output
Analog Inputs: 2 AI, 0~10V DC
Working Memory: 50 KB
Load Memory: 1 MB
What is 6ES7211-1HE40-0XB0?
6ES7211-1HE40-0XB0 is the CPU 1211C compact PLC from Siemens SIMATIC S7-1200 series, a widely adopted model with DC/DC/Relay configuration. It features 24V DC power supply, DC digital inputs and relay contact outputs. Its biggest advantage is excellent load compatibility, supporting both DC and AC loads.
Compared with transistor-output variants, this PLC requires no additional intermediate relays and works well for most general switching control applications. Cost-effective and reliable, it is a highly popular entry-level controller for small automation machines, complete control cabinets and general industrial control projects.
Why Choose Siemens 6ES7211-1HE40-0XB0?
✅ Trusted Siemens Quality with Proven Stability Siemens SIMATIC S7-1200 PLCs are widely used worldwide. Reliable hardware and great compatibility have been verified in numerous industrial projects.
✅ Ideal Choice for Small Automation Projects As a compact controller, CPU 1211C is designed for equipment with limited I/O requirements. It avoids over-specification and unnecessary costs for small machines.
✅ Flexible Relay Output for Various Loads The DC/DC/Relay variant supports both AC and DC loads. In most cases, no extra intermediate relays are needed, bringing great convenience for new machine assembly and retrofitting.
✅ Easy Expansion for Future Upgrades Signal boards and communication modules can be added later to expand functions. You don't have to replace the main PLC when upgrading your automation system.
Matching Selection & Expansion Options
You can expand the functions of 6ES7211-1HE40-0XB0 with various accessories according to project requirements:
Signal Boards: SB 1221 digital input board, SB 1222 digital output board, SB 1231 analog input board for extending I/O points
Communication Expansion: CB 1241 RS485 communication board, supports Modbus RTU protocol to connect third-party devices
Common Accessories: 24V DC industrial power supply, DIN rail mounting parts, Ethernet cables
Programming Software: TIA Portal, supports multiple programming languages including Ladder Diagram and Structured Text
How to Choose Between the Two 1211C Variants
6ES7211-1AE40-0XB0 (DC/DC/DC): Equipped with transistor outputs supporting high-speed pulses, it is designed for motion control scenarios to drive stepper and servo motors.
6ES7211-1HE40-0XB0 (DC/DC/Relay): Features relay outputs that work with both AC and DC loads, perfect for general switching control and systems with mixed load types.
Aftersales Support
Quantity available: In stock.
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Warranty: 12 months.
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Lead time: Shipment within 3-5 working days.
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Terms of payment: T/T. RMB (CNY) support.
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Courier partners: FedEx, DHL, UPS, TNT, EMS, SF express.
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FAQ
Q1: What is the maximum current rating for the relay outputs of 6ES7211-1HE40-0XB0?
A1: Each relay contact is rated at 2A. It can drive small loads directly. For high-power loads, external intermediate relays are recommended.
Q2: Can 6ES7211-1HE40-0XB0 generate pulses to control servo motors?
A2: No. This relay-output model features slow switching speed and cannot provide high-speed pulses. Select the transistor version 6ES7211-1AE40-0XB0 if motion control is required.
Q3: How many signal boards can be mounted on one 6ES7211-1HE40-0XB0 CPU?
A3: CPU 1211C supports only one signal board. SM expansion modules are not compatible. You need to plan I/O expansion requirements in advance.
Q4: How can I place an order or apply for bulk purchase discounts?
A4: Send your required order quantity via email to Irene8866@163.com, or leave us a message on WhatsApp (+86 18950163907). We will reply within 24 hours with formal quotation and stock confirmation.
For more product information, please contact our professional sales team to obtain the latest pricing and stock information for the Siemens 6ES7211-1HE40-0XB0!
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