6ES7212-1AF50-0XB0, Siemens, SIMATIC S7-1200 G2 CPU 1212FC DC/DC/DC, compact CPU 8DI/6DO

6ES7212-1AF50-0XB0 – SIMATIC S7-1200 G2, CPU 1212FC DC/DC/DC, 8DI/6DO, Siemens

6ES7212-1AF50-0XB0 is a second-generation compact central processing unit (CPU) of the Siemens SIMATIC S7-1200 G2, designed for automation in the low to medium performance range.

Technical specifications

Wiring diagram and example

Indicative wiring diagram for the power supply, a digital input and a digital output. Term. = CPU terminal. For an actual installation, always work from the current datasheet and engineering documentation.

CPU supply: +24V DC ---[breaker]--- L+ (term.) 0V --------------- M (term.) (20.4–28.8 V DC, SELV/PELV supply) Digital input (PNP, sourcing – typical wiring): +24V ----+---[ PNP sensor ]---- DIx.x | 0V -----+------------------------ 1M Digital output (transistor, common terminal L+): L+ ---(internally connected to the CPU supply) DQx.x ----[ load ]---- 0V (M) Caution: for inductive loads (coils, valves), add a protective diode in parallel with the coil.

The input and output terminals are connected to the CPU's removable terminal blocks. Always wire the STOP button and emergency stop as a normally closed (NC) contact, so that a broken wire leads to a safe stop of the machine.

What else to buy for this CPU

Recommended related components that customers most often buy with this CPU:

• 6ES7221-1BH50-0XB0 – SM 1221, 16x DI 24 V DC
  Increases the number of inputs/outputs if the integrated I/O on the CPU is not enough.
• 6ES7222-5BH50-0XB0 – SM 1222, 16x DQ 24 V DC transistor 0.5 A
  Increases the number of inputs/outputs if the integrated I/O on the CPU is not enough.
• 6ES7221-3BF50-0XB0 – SB 1221, 8x DI 24 V DC, 100 kHz
  Compact addition of signals directly into the front of the CPU without taking up space on the rail.
• 6ES7954-8LE04-0AA0 – memory card 12 MB
  Enables program backup, firmware updates and CPU replacement without a laptop.
• 6ES7822-0AE25-0YA5 – STEP 7 Basic V21, programming software
  Required for configuring and programming the CPU in TIA Portal (min. version V20).
• SIMATIC S7-1200 G2 textbook – a guide to parameters and programming written in Czech
  Step by step from choosing the assembly through wiring to the first program in TIA Portal.

Official Siemens documentation

The documents open directly in the manufacturer's sources and relate to the order number 6ES7212-1AF50-0XB0.

• Datasheet PDF
• Manuals and operating documentation
• Certificates and declarations
• Product page in SiePortal

Frequently asked questions

How do I verify the correct variant?

Compare the full order number 6ES7212-1AF50-0XB0, the supply type (AC/DC/RLY, DC/DC/DC or DC/DC/RLY) and the number of inputs and outputs. A similar CPU name is not enough – the variants differ in supply and output type.

Do I need a new version of TIA Portal for G2?

Yes. SIMATIC S7-1200 G2 requires TIA Portal STEP 7 version V20 or higher – older versions do not offer the CPU G2 in the hardware catalogue.

Can modules from the original S7-1200 series be used?

No. The G2 generation uses its own range of signal boards and modules (suffix -50-0XB0), which is neither mechanically nor electrically interchangeable with the original series.

How do I find the CPU's IP address on first connection?

The easiest way is to hold an NFC phone with the Siemens mobile app to the CPU, or to search for the device directly in TIA Portal using the Accessible devices function after connecting an Ethernet cable.

Do I need a special TIA Portal licence for this CPU?

STEP 7 Basic is sufficient for normal programming. STEP 7 Professional adds advanced functions (e.g. SCL, support for S7-1500). For programming safety functions on FC variants, verify the current licence requirements with your supplier before ordering.

Alternative Kinco solution

For a new application, we can also design a Kinco control solution. Send us the application parameters; this is not an automatic direct one-for-one replacement.