Siemens 6ES7211-0BA22-0XB0 – CPU 221 Compact PLC Module | SIMATIC S7-200 Platform
Engineering Background: The SIMATIC S7-200 series represents Siemens’ proven micro-PLC platform, engineered for cost-sensitive yet performance-demanding automation tasks. The CPU 221 (6ES7211-0BA22-0XB0) is the entry-level controller in this family, delivering deterministic scan-cycle execution, robust I/O handling, and seamless integration into existing S7-200 networks — all within a compact DIN-rail footprint.
Product Positioning: Designed for procurement engineers sourcing reliable, spec-verified automation components, the 6ES7211-0BA22-0XB0 is the preferred choice for standalone machine control, OEM equipment integration, and retrofit projects where proven Siemens hardware is mandatory. Konmask.com supplies this unit with full traceability and quality verification.
Complete Technical Specifications
- Part Number / SKU: 6ES7211-0BA22-0XB0
- Product Family: SIMATIC S7-200
- CPU Type: CPU 221 Compact Unit
- Supply Voltage: 24 VDC
- Digital Inputs (DI): 6 × 24 VDC
- Digital Outputs (DO): 4 × Transistor (24 VDC, 0.75 A each)
- Program Memory: 6 KB
- Data Memory: 2 KB
- Execution Speed: 0.37 µs / Boolean instruction
- Communication Port: 1 × RS-485 (PPI/MPI compatible)
- Expansion Modules: None (standalone CPU, no expansion bus)
- Real-Time Clock: Optional (via cartridge)
- Operating Temperature: 0 °C to +55 °C
- Storage Temperature: −40 °C to +70 °C
- Protection Rating: IP20
- Mounting: DIN rail / panel mount
- Dimensions (W×H×D): 90 × 80 × 62 mm
- Weight: Approx. 320 g
- Country of Origin: Germany
- Certifications: CE, UL, cUL, FM
Proven Application Environments
- Standalone machine control (conveyors, pumps, packaging lines)
- OEM equipment with fixed I/O requirements
- Building automation and HVAC control panels
- Retrofit and upgrade of legacy S7-200 installations
- Small-scale process control in food, beverage, and pharmaceutical plants
- Educational and training lab setups for Siemens PLC programming
Engineering Advantages
- Compact Footprint: 90 mm width fits tight control cabinet layouts without sacrificing I/O density.
- Fast Boolean Execution: 0.37 µs per instruction ensures deterministic response for time-critical sequences.
- Transistor Outputs: Solid-state DO eliminates contact wear, ideal for high-cycle applications.
- PPI/MPI Communication: Native RS-485 port enables HMI connectivity (TD 200, TP070) and PC programming via STEP 7-Micro/WIN.
- Proven Platform Longevity: S7-200 ecosystem with extensive spare-parts availability and global engineering support.
- Low Power Consumption: Efficient 24 VDC design minimizes panel heat load.
System Architecture & Signal Flow
The 6ES7211-0BA22-0XB0 operates as a self-contained controller. The 24 VDC supply powers both the CPU logic and the onboard I/O. The 6 digital inputs are optically isolated and accept 24 VDC signals from field sensors (proximity switches, pushbuttons, limit switches). The 4 transistor outputs switch 24 VDC loads up to 0.75 A per channel. The RS-485 port (Port 0) supports PPI master/slave communication for HMI panels and PC-based programming via STEP 7-Micro/WIN software. No expansion bus is available on the CPU 221 — for applications requiring additional I/O, consider the CPU 222 (6ES7212-1AB23-0XB0) or higher.
Sourcing & Quality Verification
- Source: Authorized distribution channels and verified industrial surplus stock.
- Inspection: Each unit undergoes visual inspection, label verification, and functional power-on check prior to shipment.
- Authenticity: Siemens holographic labels and date codes verified. Counterfeit-risk screening applied.
- Condition: New (factory-sealed) or Refurbished (tested, cleaned, re-labeled) — specified at order confirmation.
- Warranty: 12-month replacement warranty against manufacturing defects.
Procurement Process
- Submit RFQ via support@konmask.com or add to cart directly.
- Receive proforma invoice with lead time and stock confirmation within 24 hours.
- Payment via T/T, PayPal, or approved credit terms for qualified accounts.
- Shipment via DHL / FedEx / UPS with full tracking. Export documentation (CO, packing list, commercial invoice) provided.
- Post-delivery technical support available via email or WhatsApp.
Technical FAQ
Q: Can the CPU 221 be expanded with EM modules?
A: No. The CPU 221 does not support expansion modules. For expandable configurations, use CPU 222 or above.
Q: What programming software is required?
A: STEP 7-Micro/WIN (V4.0 SP9 or later) running on Windows XP/7/10 via a PC/PPI cable or USB-PPI adapter.
Q: Is a real-time clock included?
A: Not standard. An optional real-time clock cartridge (6ES7297-1AA23-0XA0) can be inserted into the cartridge slot.
Q: What is the difference between 6ES7211-0BA22-0XB0 and 6ES7211-0BA23-0XB0?
A: The -0XB0 suffix denotes the standard firmware version. The -0XB8 suffix indicates a SIPLUS extended-temperature variant. Functionally identical for standard operating ranges.
Q: Can this unit communicate with S7-300/400 PLCs?
A: Yes, via MPI protocol over the RS-485 port, using appropriate network configuration in STEP 7.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
