6ES7214-1AG40-0XB0 Overview
When your application demands a compact yet powerful controller, the 6ES7214-1AG40-0XB0 from Siemens delivers. This CPU 1214C is a DC/DC/DC unit with onboard I/O: 14 digital inputs at 24 V DC, 10 digital outputs at 24 V DC, and 2 analog inputs (0-10 V DC). It operates on a supply voltage of DC 20.4-28.8 V, making it suitable for a wide range of industrial environments.
Part of the SIMATIC S7-1200 family, this CPU provides a program/data memory of 150 KB, ensuring ample space for your control logic. The compact design (110 mm width, 100 mm height, 75 mm depth) allows for easy installation in tight panels.

Key Features and Technical Specifications
Engineers will appreciate the robust feature set of the 6ES7214-1AG40-0XB0. Here are the critical specifications:
- Digital Inputs: 14 integrated, with 6 usable for high-speed counting (HSC) up to 100 kHz.
- Digital Outputs: 10 integrated, including 4 high-speed outputs (100 kHz pulse train output).
- Analog Inputs: 2 channels, 0-10 V DC, with 10-bit resolution.
- Supply Voltage: DC 20.4-28.8 V, with reverse polarity protection.
- Memory: 150 KB work memory, 4 MB load memory (integrated).
- Power Loss: Typically 12 W.
- Communication: PROFINET interface with one RJ45 port, supports PROFINET IO Controller and Device.
- Protocols: Supports PROFIBUS (via CM), OPC UA, Modbus, TCP/IP, UDP, and more.
- Ambient Temperature: -20 °C to 60 °C (horizontal), -20 °C to 50 °C (vertical).
- Protection: IP20 degree of protection.
One distinctive feature is the integrated analog inputs, which allow direct connection of analog sensors without additional modules. This simplifies wiring and reduces overall system cost.
Applications and Use Cases
The 6ES7214-1AG40-0XB0Common applications include packaging machinery, material handling systems, and simple process control. Its built-in high-speed counters and pulse train outputs make it suitable for positioning tasks and speed monitoring.
For example, in a conveyor system, the CPU can handle multiple sensors and actuators directly, reducing the need for expansion modules. The PROFINET interface enables easy integration into larger networks, allowing data exchange with HMIs and SCADA systems.

Installation and Setup
Mounting the 6ES7214-1AG40-0XB0 is straightforward. It snaps onto a standard 35 mm DIN rail. Ensure adequate clearance for ventilation and cable routing. The power supply must be within DC 20.4-28.8 V; use a regulated DC source to avoid damage.
Wiring digital inputs and outputs is simple: inputs are source/sink configurable, and outputs are transistor type with a max current of 0.5 A per channel. For analog inputs, use shielded twisted-pair cables (max 100 m) to minimize noise.
Maintenance and Reliability
This CPU is designed for long-term reliability. It has a maintenance-free backup (no battery required) for retentive data. The operating temperature range of -20 °C to 60 °C allows installation in harsh environments.
Regular inspection of the power supply and connections is recommended to prevent downtime. The diagnostic buffer and status LEDs (RUN/STOP, ERROR, MAINT) help quickly identify issues.
Compatibility and Integration
The 6ES7214-1AG40-0XB0It supports up to 8 signal modules, 1 signal board, and 3 communication modules. The PROFINET interface allows connection to IO devices (up to 16).
Programming is done with STEP 7 V18 or higher, using LAD, FBD, or SCL languages. The CPU supports OPC UA server, enabling easy data exchange with higher-level systems.
Buyer's Guide: Is This CPU Right for You?
When evaluating the 6ES7214-1AG40-0XB0, consider your I/O requirements. With 14 DI, 10 DO, and 2 AI, it suits applications needing moderate I/O without expansion. If you need more, expansion modules are available.
Check your communication needs: PROFINET is built-in, but if you require PROFIBUS or AS-Interface, you'll need a communication module (e.g., CM 1243-5). Also, verify the ambient temperature range matches your installation environment.
For memory-intensive applications, the 150 KB work memory is ample for most small programs. If you need more, consider higher-end CPUs in the S7-1200 family.
Availability and Support
The 6ES7214-1AG40-0XB0 is available from AutoDCSTech. We are an industrial automation parts supplier dedicated to providing genuine components. Contact us for current stock and lead times.
Availability & Condition at AutoDCSTech
| Part Number | 6ES7214-1AG40-0XB0 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | Germany |
