Siemens 6ES7211-0AA20-0XB0 is a compact SIMATIC S7-200 CPU 221 designed for verified DC/DC/DC legacy control systems.
The Siemens 6ES7211-0AA20-0XB0 is an exact SIMATIC S7-200 CPU 221 DC/DC/DC order-number variant confirmed in official Siemens certification documentation. It belongs to the compact S7-200 programmable controller system.
The exact -0AA20- revision must be verified from the device label. Official sources reviewed for this page did not confirm the channel counts, memory figures or an exact PLM lifecycle wording, so those details are intentionally not inferred from later CPU 221 revisions.
| Manufacturer | Siemens |
| Order Number | 6ES7211-0AA20-0XB0 |
| Product Designation | SIMATIC S7-200 CPU 221 DC/DC/DC |
| Exact Revision | Officially confirmed |
| Lifecycle Category | No exact official PLM wording confirmed |
| Manufacturer | Siemens |
| Complete Part Number | 6ES7211-0AA20-0XB0 |
| Product Type | Compact programmable controller CPU |
| Controller Family | SIMATIC S7-200 |
| CPU Designation | CPU 221 |
| Electrical Configuration | DC/DC/DC |
| Certification Temperature Code | T4A and T4 |
| Maximum Certified Ambient | 40 °C |
| Exact Lifecycle Category | Not assigned without official PLM wording |
Provides compact programmable control in installed S7-200 machines using a DC/DC/DC CPU topology.
Supports exact-revision maintenance where the -0AA20- order number is documented.
Enables label, wiring and program checks before any CPU migration or substitution.
No exact official Siemens PLM wording was confirmed for the complete 6ES7211-0AA20-0XB0 order number in the official sources reviewed. No lifecycle category is assigned on this page.
It is a Siemens SIMATIC S7-200 CPU 221 with a DC/DC/DC electrical configuration.
Yes. Siemens certification documentation lists the exact 6ES7 211-0AA20-0XB0 model.
No. Exact-revision channel counts were not confirmed and are not copied from later CPU 221 variants.
No exact official PLM wording was confirmed, so this page does not assign a lifecycle category.
Verify the label, DC wiring, expansion modules, program backup and installed S7-200 documentation.
No. A different suffix can have different technical and lifecycle data.
Confirm the complete order number, installed-system compatibility, condition and delivery requirements with our industrial parts team.
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We review the installed system, electrical configuration and application before replacement.
We check the full Siemens order number, label, revision and physical condition.
Industrial components are packed for handling protection and coordinated for international delivery.
Send the exact order number and installed-system information for availability, compatibility review, inspection and warranty details.
Email: sales6@apterpower.com
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Contact our team to confirm model availability, replacement fit, condition, lead time and worldwide delivery options.
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