Siemens 6ES7211-0AA23-0XB0 SIMATIC S7-200, CPU 221 Compact unit

The Siemens 6ES7211-0AA23-0XB0 is a SIMATIC S7-200 CPU 221 compact PLC with DC power supply, featuring 6 digital inputs and 4 transistor outputs. It offers 4 KB program memory and 2 KB data memory, with 4 built-in 30 kHz high-speed counters and 2 high-speed pulse outputs (20 kHz) for basic motion control tasks. This cost-effective unit is ideal for small automation applications requiring reliable logic control and counting functions.

 

  • Item No :

    6ES7211-0AA23-0XB0
  • Order(MOQ) :

    1 Piece
  • Payment :

    EXW/CIF
  • Product Origin :

    China
  • Shipping Port :

    Wuhan
  • Lead Time :

    3-5days
  • Weight :

    0.239kg
  • Product Details

    General Information

     
     
    Attribute Specification
    Product Type SIMATIC S7-200 Compact PLC
    Order Number 6ES7211-0AA23-0XB0
    Model CPU 221
    Product Status Spare part (discontinued series)
    Power Supply 24V DC 

    Memory & Performance

     
     
    Parameter Specification
    Program Memory 4 KB 
    Data Memory (V area) 2 KB 
    Bit Operation Speed 0.22 µs 
    Memory Backup Internal capacitor + optional battery (up to 200 days) 

    Integrated I/O

     
     
    Parameter Specification
    Digital Inputs 6 x 24V DC 
    Digital Outputs 4 x 24V DC, 0.75 A (transistor) 
    Analog I/O None
    Integrated 24V Sensor Supply 180 mA 

    Technological Functions

     
     
    Parameter Specification
    High-Speed Counters 4 x 30 kHz 
    High-Speed Pulse Outputs 2 x 20 kHz 
    Interrupt Inputs Yes (I0.0 - I0.3) 
    Analog Potentiometer 1 (8-bit) 

    Physical & Environmental

     
     
    Parameter Specification
    Dimensions (W×H×D) 90 × 80 × 62 mm 
    Operating Temperature 0°C to +45°C 
    Protection Class IP20 
    Power Loss (typ.) 3 W 

    Recommended Alternative Models

     
     
    Model Number Description Key Differences
    6ES7211-0BA23-0XB0 CPU 221 AC/DC/Relay AC power supply, relay outputs, same memory/counters 
    6ES7214-1BD23-0XB0 CPU 224 DC/DC/DC Higher memory (16 KB), more I/O (14 DI/10 DO), 7 expansion modules 
    6ES7214-1AD23-0XB0 CPU 224 AC/DC/Relay AC power supply, relay outputs, expanded I/O capacity
    6ES7211-0AA23-0XB0 (this unit) Original spare part Limited availability, discontinued production
    S7-1200 CPU 1211C (6ES7211-1AE40-0XB0) Modern replacement TIA Portal support, PROFINET/Ethernet, USB programming, higher performance; requires code migration 

    FAQs

    1: What is the maximum counting frequency of the high-speed counters?

    A: The CPU 221 features 4 high-speed counters with a maximum counting frequency of 30 kHz, with two counters supporting 20 kHz A/B quadrature encoder signals .

    2: Does this CPU have a real-time clock?

    A: No. The CPU 221 does not have a built-in real-time clock . A separate "clock/battery card" is required for time-stamping functions.

    3: What is the maximum I/O expansion capability?

    A: The CPU 221 is the most compact in the S7-200 family and has no expansion module slots. Total I/O is fixed at 6 inputs and 4 outputs . For expandability, consider CPU 222 or higher.

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