Article 6ES7214-1AG40-0XB0 is the DC/DC/DC version of the SIMATIC S7-1200 CPU 1214C. It combines the controller, PROFINET communication and a broad onboard I/O set in a compact module for small and medium automation tasks.

The integrated channels comprise fourteen 24 V DC digital inputs, ten 24 V DC transistor outputs and two 0–10 V analog inputs. The current product description specifies 150 KB program/data memory and a 20.4–28.8 V DC supply range.

Manufacturer	Siemens
Product Family	SIMATIC S7-1200
Article Number	6ES7214-1AG40-0XB0
Product Type	CPU 1214C DC/DC/DC
Firmware Version	V4.7
Program/Data Memory	150 KB
Integrated Load Memory	4 MB
Supply Range	20.4 to 28.8 V DC
Digital Inputs	14 channels, 24 V DC
Digital Outputs	10 transistor channels, 24 V DC
Analog Inputs	2 channels, 0 to 10 V DC
PROFINET Interface	Integrated Ethernet port
Signal-Module Expansion	Up to 8 signal modules
Communication Expansion	Up to 3 communication modules
Signal Board / Battery Board / Communication Board	1 position
Engineering Software	STEP 7 V20 or later for the current firmware data

• Executes the machine application and maintains the S7-1200 process image.
• Connects distributed devices, engineering stations and HMIs through the integrated PROFINET interface.
• Handles fourteen digital input signals and ten transistor output signals directly at the CPU.
• Measures two 0–10 V analog channels without a separate analog input module.
• Extends with signal, communication and compact board options when the verified hardware configuration requires them.

• Use only the complete 6ES7214-1AG40-0XB0 article when a DC/DC/DC replacement is required.
• CPU 1214C AC/DC/relay and DC/DC/relay variants have different power and output hardware and are not identical.
• Match the STEP 7 device version to the installed CPU firmware and preserve the original project archive.
• Verify every attached signal module, communication module and signal or communication board in the hardware configuration.
• Retain PROFINET device names, IP parameters, protection settings and any SIMATIC memory card association.

• Compact machine automation requiring local digital and analog signals.
• PROFINET-connected production cells with HMI and distributed I/O devices.
• Motion and positioning functions within the supported S7-1200 technology range.
• Control panels that benefit from eight signal-module expansion positions.
• Migration or service of an existing CPU 1214C DC/DC/DC with a validated STEP 7 project.

Which CPU 1214C variant is described here?

This page covers the DC/DC/DC article 6ES7214-1AG40-0XB0.

How many onboard transistor outputs are provided?

The CPU has ten 24 V DC transistor digital outputs.

Does this CPU include analog inputs?

Yes. Two onboard analog inputs accept 0–10 V DC signals.

Can a relay-output CPU 1214C be substituted without changes?

No. Relay variants differ in supply and output circuitry, so the full order number and wiring must be evaluated.

How many signal modules can be added?

CPU 1214C supports up to eight signal modules in the documented S7-1200 configuration.

Which data should be preserved before replacement?

Preserve the STEP 7 project, firmware, IP and PROFINET settings, protection credentials, module order and memory-card information.