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Copy| Product Name | Siemens 6ES7212-1AF40-0XB0 | SIMATIC S7-1200F CPU 1212FC DC/DC/DC |
| Item NO. | 2927221 |
| Weight | 0.1 kg = 0.2205 lb = 3.5274 oz |
| Category | SIEMENS |
| Brand | SIEMENS |
| Creation Time | 2026-10-26 |
A fail-safe compact CPU with onboard DC I/O, analog inputs and integrated PROFINET.
Siemens 6ES7212-1AF40-0XB0 is a SIMATIC S7-1200F CPU 1212FC DC/DC/DC controller for standard and fail-safe program processing. It uses a 20.4–28.8 V DC supply and integrates eight 24 V DC inputs, six 24 V DC transistor outputs and two 0–10 V analog inputs.
The fail-safe role of Siemens 6ES7212-1AF40-0XB0 depends on the complete engineered configuration, not on the CPU catalog number alone. The safety program, approved fail-safe I/O, hardware parameters and acceptance procedure must agree with the installed machine configuration.
With 150 KB of program/data memory, Siemens 6ES7212-1AF40-0XB0 uses the S7-1200 expansion and PROFINET environment while retaining its fail-safe identity. Firmware V4.7 and the required engineering software level belong in the project record before a replacement or program transfer is attempted.
| Technical Item | Value |
|---|---|
| Brand | Siemens |
| Model | 6ES7212-1AF40-0XB0 |
| Product Name | SIMATIC S7-1200F CPU 1212FC DC/DC/DC |
| Country | Germany |
| CPU Class | Fail-safe compact CPU |
| Supply Voltage | 20.4–28.8 V DC |
| Digital Inputs | 8 × 24 V DC |
| Digital Outputs | 6 × 24 V DC transistor |
| Analog Inputs | 2 × 0–10 V |
| Program/Data Memory | 150 KB |
| Firmware Version | V4.7 |
| Engineering Requirement | STEP 7 V20 or later |
| Rated Current, CPU Only | 400 mA |
| Maximum with Expansion | 1,200 mA |
| Inrush Current | 12 A at 28.8 V DC |
| Backplane Supply | 1,000 mA |
Select Siemens 6ES7212-1AF40-0XB0 by exact order number and supported firmware, then add each fail-safe module with its assigned parameters and addresses. Compile the safety program, resolve every hardware mismatch and record the generated safety signature before commissioning.
Test the complete sensor-to-logic-to-actuator path controlled by Siemens 6ES7212-1AF40-0XB0, including discrepancy timing, shutdown response and restart prevention required by the machine design. Record actual test results instead of relying only on the absence of online diagnostics.
When firmware, wiring, F-parameters or safety logic associated with Siemens 6ES7212-1AF40-0XB0 changes, compare the new signature with the approved record and repeat the affected validation. Keep authorization, change reason and acceptance evidence with the project release.
Read the diagnostic buffer of Siemens 6ES7212-1AF40-0XB0 together with F-I/O and network diagnostics before resetting anything. Preserve the time order, affected address and passivation message so later symptoms do not replace the initiating cause.
Isolate the machine safely, then compare the affected circuit of Siemens 6ES7212-1AF40-0XB0 with its approved wiring and parameter set. Measure the 24 V supply under load, inspect channel pairs and field devices, and confirm that the installed module identity still matches the project.
Clear the cause recorded by Siemens 6ES7212-1AF40-0XB0, run the required channel or safety-function test and verify that diagnostics remain clear. Perform reintegration through the approved program sequence; do not use repeated acknowledgement to keep a recurring fault out of view.
Read the diagnostic buffer of Siemens 6ES7212-1AF40-0XB0 and the affected F-I/O module, then verify wiring, PROFIsafe parameters and the accepted hardware configuration. Reintegrate only after the recorded cause is removed.
Siemens 6ES7212-1AF40-0XB0 requires a project that represents the fail-safe CPU and its safety program. Standard logic may coexist, but the safety part and hardware must be engineered and accepted for this CPU.
Siemens 6ES7212-1AF40-0XB0 uses firmware V4.7 and requires a compatible engineering release. Match the configured CPU version and STEP 7 level before attempting a program transfer.
Measure the 24 V supply at Siemens 6ES7212-1AF40-0XB0 while the system starts and account for the specified inrush plus attached-module demand. Check conductors and protective devices for transient voltage drop.
Restore only the verified Siemens 6ES7212-1AF40-0XB0 hardware and safety project, confirm firmware compatibility, perform the required acceptance tests and retain the test evidence before returning the safety function to service.
The behavior of Siemens 6ES7212-1AF40-0XB0 also depends on firmware, safety program, F-I/O parameters, network identity and accepted signatures. Compare the complete configuration record, not only the front label.
Moore Automation can assist with enquiries for current and older industrial automation references by keeping the requested identifier and available records together.
The service does not imply a guaranteed replacement or stock position; it provides a structured route for reviewing the requested part and possible order information.
Moore Automation Sales Team
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