Description
The Siemens 6ES7214-1AG31-0XB0 is a CPU 1214C compact controller belonging to the SIMATIC S7-1200 controller family. It executes control logic, manages discrete and analog I/O, and handles industrial network communications through its integrated PROFINET interface. This specific hardware variant uses a DC/DC/DC configuration, meaning it requires a 24 V DC power supply, features 24 V DC transistor source digital inputs, and provides 24 V DC solid-state transistor digital oSiemens 6ES7214-1AG31-0XB0utputs.
Commercial Terms & Availability
- Condition: New Original (Factory Sealed)
- Availability: In Stock
- Lead Time: 1–2 business days
- Warranty: 12-month comprehensive warranty
- Pricing Note: Price subject to market conditions; contact us for a firm quote.
Technical Specifications
The following table outlines the physical, electrical, and performance parameters for the 6ES7214-1AG31-0XB0 CPU.
| Parameter | Value |
| Model Number | CPU 1214C DC/DC/DC |
| Product ID | 6ES7214-1AG31-0XB0 |
| Work Memory | 75 KB (integrated, non-expandable) |
| Load Memory | 4 MB (integrated), expandable via SIMATIC Memory Card |
| Retentive Memory | 10 KB maximum |
| Supply Voltage | 24 V DC (allowable range: 20.4 V DC to 28.8 V DC) |
| Onboard Digital Inputs | 14 inputs (24 V DC, sink/source IEC Type 1) |
| Onboard Digital Outputs | 10 outputs (24 V DC transistor, 0.5 A maximum per point) |
| Onboard Analog Inputs | 2 inputs (0 to 10 V DC, 10-bit resolution) |
| Integrated Communication | 1x PROFINET port (RJ45, 10/100 Mbps) |
| High-Speed Counters (HSC) | 6 counters (up to 100 kHz single-phase) |
| Pulse Outputs | 4 outputs (PTO/PWM up to 100 kHz) |
| Dimensions (W x H x D) | 110 mm x 100 mm x 75 mm |
Field Integration & Lifecycle Notes
Engineering Software & Compatibility
The 6ES7214-1AG31-0XB0 is a Firmware Version 3.0 (V3.0) generation hardware asset. It is configured and programmed via the Totally Integrated Automation (TIA) Portal software framework.
- Software Requirement: STEP 7 Basic or Professional (V11 SP2 or higher).
- Hardware Status Note: This part number represents an older generation of the S7-1200 series. While fully functional in existing architectures, it has been succeeded by newer hardware revisions (such as the 6ES7214-1AG40-0XB0, which supports Firmware V4.0 and higher, offers expanded work memory, and requires TIA Portal V13 or higher).
Expansion and Communication Capabilities
The compact design supports field-level scalability via three separate expansion interfaces:
- Signal Boards (SB): One signal board or communication board can insert directly into the front slot of the CPU without changing the physical footprint (e.g., adding a single analog output or RS-485 serial port).
- Signal Modules (SM): The CPU supports a maximum expansion of up to 8 signal modules (digital or analog) attached to the right side of the module.
- Communication Modules (CM): Up to 3 communication modules (such as PROFIBUS DP master/slave, RS-232, or GPRS modules) can be attached to the left side of the CPU.
Frequently Asked Questions
Q: Can this V3.0 CPU (6ES7214-1AG31-0XB0) be upgraded to Firmware V4.0 or higher?
No. Hardware limitations prevent Firmware V3.x modules from being upgraded to Firmware V4.x. The physical bootloader chips are different. The maximum firmware version supported by this specific hardware generation is V3.0.2. If your system application requires features exclusive to V4.x (such as integrated regional localization, enhanced OPC UA server functionality, or web server enhancements), you must migrate to a 6ES7214-1AG40-0XB0 hardware module.
Q: How do the high-speed outputs behave when configuring a motion control application?
The DC/DC/DC solid-state transistor outputs on this module can handle high-frequency switching up to 100 kHz. This allows you to control stepper drives or servo drives via Pulse Train Output (PTO) or Pulse Width Modulation (PWM) channels without purchasing dedicated positioning modules. Ensure the external wiring limitations and load impedance parameters match the specifications outlined in the Siemens S7-1200 system manual to prevent premature transistor degradation.
Q: Is a memory card mandatory for operation?
No, the module functions completely without an external memory card by utilizing its integrated 4 MB internal flash load memory. However, a SIMATIC Memory Card (MC) can be inserted to facilitate firmware updates, transfer program files between multiple controllers, or expand total data logging storage capacities during operation. Ensure the CPU is powered down before inserting or removing a memory card to prevent program corruption.
