Siemens 6ES7214-1AD23-0XB8 CPU SR40 AC/DC/Relay Compact Unit – S7-200 SMART Series
When a production line loses its PLC CPU, the consequences are immediate and costly: conveyor belts stop, robotic arms freeze mid-cycle, and entire manufacturing cells go dark. Every minute of unplanned downtime can cost thousands of dollars in lost output, emergency labor, and delayed shipments. The Siemens 6ES7214-1AD23-0XB8 CPU SR40 is the heartbeat of countless small-to-medium automation systems worldwide — without it, the machine simply does not run.
The 6ES7214-1AD23-0XB8 is the flagship CPU of the Siemens S7-200 SMART series, offering the highest I/O count (40 onboard) in its family. Positioned as the go-to controller for OEM machine builders and system integrators across Asia, Europe, and the Americas, this CPU combines Siemens’ legendary reliability with a compact footprint and cost-effective pricing — making it one of the best-selling compact PLCs in the global industrial automation market.
Technical Specifications
- Part Number: 6ES7214-1AD23-0XB8
- Model: CPU SR40
- Series: Siemens S7-200 SMART
- Power Supply: AC 85–264 V
- Digital Inputs: 24 × DC 24 V
- Digital Outputs: 16 × Relay (2 A per point)
- Total Onboard I/O: 40
- Max Expandable I/O: Up to 188 I/O with expansion modules
- Program Memory: 24 KB
- Data Memory: 10 KB
- Retentive Memory: 10 KB (EEPROM)
- Communication Ports: 1 × RS485, 1 × Ethernet (RJ45)
- Ethernet Protocol: Modbus TCP, S7 Protocol, Open User Communication
- Real-Time Clock: Built-in
- High-Speed Counters: 4 × 200 kHz
- Pulse Outputs: 3 × 100 kHz (transistor output models)
- Operating Temperature: 0–55 °C
- Protection Rating: IP20
- Dimensions (W×H×D): 175 × 100 × 81 mm
- Weight: Approx. 700 g
- Programming Software: STEP 7-Micro/WIN SMART
- Certifications: CE, UL, cUL, FM
Key Features & Benefits
- Highest I/O in S7-200 SMART family: 40 onboard I/O eliminates the need for additional expansion modules in most small machine applications, reducing panel space and wiring cost.
- Relay outputs for versatile load switching: Directly drive motors, solenoids, and indicator lights without external relays — simplifying panel design.
- Built-in Ethernet port: Enables seamless SCADA integration, remote monitoring, and HMI connectivity without additional communication modules.
- AC power supply: Accepts wide-range AC input (85–264 V), ideal for global machine deployment without power conditioning equipment.
- EEPROM retentive memory: Retains critical data and program during power loss — no battery required for program retention.
- Compact DIN-rail mount: Space-efficient design fits standard control panels; quick installation reduces commissioning time.
- STEP 7-Micro/WIN SMART: Intuitive programming environment with ladder logic, FBD, and STL — reduces engineering time for experienced and new users alike.
Industry & Equipment Applications
- Packaging machinery: Filling, sealing, labeling, and cartoning lines
- Textile & garment equipment: Knitting machines, dyeing lines, cutting systems
- Food & beverage processing: Conveyor control, temperature regulation, batch processing
- Water treatment: Pump station control, dosing systems, level monitoring
- HVAC systems: Air handling unit control, chiller sequencing
- Material handling: Palletizers, sorters, automated storage systems
- Printing & paper: Web tension control, register control
- OEM machine builders: General-purpose machine control requiring compact, reliable PLC
System Integration & Compatible Parts
The 6ES7214-1AD23-0XB8 is designed to work seamlessly within the S7-200 SMART ecosystem. Compatible expansion modules and accessories include:
- Digital I/O Expansion: EM DE08 (6ES7222-1BF22-0XA8), EM DR08 (6ES7222-1HF22-0XA8)
- Analog I/O Expansion: EM AE04 (6ES7231-4HD22-0XA8), EM AQ02 (6ES7232-4HB22-0XA8)
- Communication Module: CM01 RS232/RS485 (6ES7241-1CH30-0XB0)
- HMI Panels: Siemens SMART LINE series (e.g., KTP700 Smart)
- Programming Cable: USB-PPI Multi-Master Cable
- Power Supply: Siemens PM207 (6EP1332-1SH71) for DC-powered panels
Our Quality Assurance Process
- Source verification: All units are sourced from authorized distributors or verified surplus channels with full traceability documentation.
- Visual inspection: Each unit is inspected for physical damage, label integrity, and connector condition before shipment.
- Functional testing: Where applicable, units undergo power-on and communication port testing.
- Packaging: Anti-static packaging with moisture barrier bags and foam cushioning to prevent transit damage.
- Documentation: Certificate of conformity and inspection report available upon request.
How to Order
- Submit an inquiry via the Contact Us form or email support@konmask.com.
- Provide your required quantity, delivery timeline, and destination country.
- Receive a formal quotation within 24 business hours.
- Confirm order and arrange payment via T/T, PayPal, or other agreed methods.
- Shipment via DHL, FedEx, UPS, or sea freight — tracking provided.
Why Choose Konmask.com?
- ✅ Specialized in industrial automation components — PLC, DCS, HMI, drives, and more
- ✅ Global shipping to 50+ countries with reliable logistics partners
- ✅ Fast response — quotations within 24 hours, urgent orders prioritized
- ✅ Quality guaranteed — every unit inspected before dispatch
- ✅ B2B focused — serving OEMs, system integrators, MRO buyers, and distributors
- ✅ Competitive pricing — direct sourcing keeps costs low without compromising quality
Frequently Asked Questions
Q: Is the 6ES7214-1AD23-0XB8 still in production?
A: The S7-200 SMART series remains in active production and sale by Siemens. This specific CPU SR40 model is widely available. Contact us to confirm current stock.
Q: What is the difference between 6ES7214-1AD23-0XB8 and 6ES7214-1BD23-0XB8?
A: The 1AD23 variant uses an AC power supply with relay outputs (CPU SR40), while the 1BD23 variant uses a DC 24V power supply with transistor outputs (CPU ST40). Choose based on your panel power supply and output load type.
Q: Can this CPU communicate with Siemens S7-1200 or S7-300?
A: Yes, via Ethernet using S7 Protocol or Modbus TCP. The built-in Ethernet port enables cross-platform communication with other Siemens PLCs and third-party devices.
Q: What programming software is required?
A: STEP 7-Micro/WIN SMART, available as a free download from the Siemens Industry Online Support portal. It supports Windows 7/10/11.
Q: Do you provide a warranty?
A: Yes. We offer a standard 90-day warranty against defects. Extended warranty options are available — please inquire when requesting a quote.
Q: Can you supply in bulk quantities?
A: Absolutely. We serve OEM manufacturers and distributors requiring regular bulk orders. Volume pricing is available upon request.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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