SIEMENS 6ES7216-2AD23-0XB8 CPU 216-2 AC/DC/Relay Compact Unit – SIMATIC S7-200 Series
Imagine a mid-scale automated production line suddenly losing its central controller — conveyors halt, robotic arms freeze, and the entire process grinds to a stop. Every minute of downtime translates directly into lost revenue and missed delivery commitments. The SIEMENS 6ES7216-2AD23-0XB8 CPU 216-2 Compact Unit is the heart of such systems: a proven, field-hardened programmable logic controller that keeps critical industrial processes running without interruption. Without it, there is no automation — only costly manual intervention.
Within the SIMATIC S7-200 product family, the CPU 216-2 occupies the high-end compact tier, offering the largest I/O count and most extensive communication capability of the S7-200 CPU range. Globally, the S7-200 series has been deployed in millions of machines across packaging, material handling, building automation, and process control applications. The 6ES7216-2AD23-0XB8 variant — featuring AC power supply, DC digital inputs, and relay digital outputs — is particularly valued in environments where output isolation and mixed-voltage load switching are essential requirements.
Technical Specifications
- Part Number / SKU: 6ES7216-2AD23-0XB8
- Series: SIMATIC S7-200
- CPU Type: CPU 216-2 AC/DC/Relay
- Power Supply: AC 85–264 V
- Digital Inputs (Onboard): 24 × DC 24 V
- Digital Outputs (Onboard): 16 × Relay
- Analog Inputs (Onboard): 2 × 0–10 V
- Expandable I/O: Up to 7 expansion modules
- Program Memory: 16 KB
- Data Memory: 10 KB
- Communication Ports: 2 × RS-485 (PPI/MPI/Freeport)
- Real-Time Clock: Built-in
- Weight: 1,360 g
- Manufacturer: Siemens AG, Germany
Key Features & Benefits
- Relay Outputs for Load Isolation: Relay contacts provide galvanic isolation between the controller and field devices, enabling safe switching of AC and DC loads at mixed voltages — ideal for motor starters, solenoids, and indicator lamps.
- Dual RS-485 Ports: Two independent communication ports allow simultaneous connection to a STEP 7 Micro/WIN programming station and an HMI or remote I/O network, eliminating the need for additional communication modules in many applications.
- Maximum S7-200 I/O Capacity: As the largest CPU in the S7-200 range, the CPU 216-2 supports up to 7 expansion modules, enabling configurations of up to 248 digital I/O points — sufficient for complex multi-axis or multi-zone control tasks.
- Built-In Analog Inputs: Two onboard analog inputs reduce BOM cost and panel space by eliminating the need for a dedicated analog expansion module in applications requiring basic process variable monitoring.
- Real-Time Clock: Enables time-stamped data logging, scheduled operations, and recipe management without an external clock module.
- Wide AC Input Range: Accepts 85–264 V AC, making the unit compatible with global power infrastructure without additional transformers.
- Compact DIN-Rail Form Factor: Designed for space-efficient panel installation, reducing enclosure size and wiring complexity.
Industry & Equipment Applications
- Packaging Machinery: Filling, capping, labeling, and case-packing lines requiring coordinated multi-axis sequencing and HMI integration.
- Material Handling: Conveyor systems, sorting stations, and palletizing cells where relay outputs drive motor contactors and pneumatic valves.
- Building Automation: HVAC control panels, pump stations, and access control systems benefiting from the wide AC supply range.
- Water & Wastewater Treatment: Pump sequencing, level control, and dosing systems requiring reliable relay switching and analog feedback.
- Textile & Printing Equipment: Web tension control and register correction systems leveraging the dual-port communication for HMI and drive integration.
- Food & Beverage Processing: Batch control and CIP (Clean-In-Place) sequencing where isolated relay outputs prevent cross-contamination of control signals.
System Integration & Compatible Parts
- Expansion Modules: EM 221 (DI), EM 222 (DO), EM 223 (DI/DO), EM 231 (AI), EM 232 (AO), EM 235 (AI/AO)
- Communication: CP 243-1 (Ethernet), CP 243-2 (AS-Interface), EM 277 (PROFIBUS-DP)
- HMI: SIMATIC TD 200, TD 400C, OP 73micro, TP 177micro
- Programming Software: STEP 7 Micro/WIN V4.0 SP9 or later
- Programming Cable: PC/PPI Cable (6ES7901-3CB30-0XA0) or USB/PPI Multi-Master Cable
- Power Supply: SITOP PSU100S 24 V DC for expansion module supply
Our Quality Assurance Process
At Konmask.com, every SIEMENS 6ES7216-2AD23-0XB8 unit undergoes a rigorous multi-stage verification process before shipment:
- Authenticity Verification: Cross-referencing of factory labels, date codes, and holographic markings against Siemens OEM specifications.
- Visual Inspection: Full examination of housing, connector pins, terminal blocks, and PCB (where accessible) for signs of damage, rework, or counterfeit indicators.
- Functional Test: Power-on verification and communication port check using STEP 7 Micro/WIN to confirm firmware version and CPU status.
- Packaging: Anti-static packaging with desiccant, foam cushioning, and tamper-evident sealing for safe international transit.
- Documentation: Certificate of conformity and test report available upon request.
How to Order
- Submit your inquiry via the Contact Us form or email support@konmask.com with your required quantity and delivery timeline.
- Receive a formal quotation with unit price, lead time, and shipping options within 24 business hours.
- Confirm the purchase order and complete payment via T/T bank transfer or other agreed method.
- Receive tracking information and shipping documents (commercial invoice, packing list, COC) within 2 business days of payment clearance.
Why Choose Konmask.com?
- ✅ Specialized in Industrial Automation Components — PLC, DCS, HMI, drives, and I/O modules from leading global brands.
- ✅ Verified Sourcing — All units sourced from authorized distributors or factory-sealed surplus stock.
- ✅ Global Shipping — DHL, FedEx, and UPS express delivery to 150+ countries with full export documentation.
- ✅ Technical Support — Pre-sales engineering consultation to confirm compatibility before you order.
- ✅ Competitive Pricing — Transparent quotation with no hidden fees; volume discounts available.
- ✅ Responsive Service — Dedicated account managers with response within 24 hours.
Frequently Asked Questions
Q1: Is the 6ES7216-2AD23-0XB8 still in production?
A: The SIMATIC S7-200 series has been discontinued by Siemens (end of life). However, Konmask.com maintains stock of new and refurbished units to support ongoing maintenance and replacement needs. Contact us for current availability.
Q2: What is the difference between 6ES7216-2AD23-0XB8 and 6ES7216-2BD23-0XB8?
A: The key difference is the power supply and output type. The 2AD23 variant uses an AC power supply with relay outputs, while the 2BD23 variant uses a DC power supply with transistor (DC) outputs. Choose based on your panel power source and load switching requirements.
Q3: Can this CPU communicate with S7-300 or S7-400 systems?
A: Yes, via the EM 277 PROFIBUS-DP expansion module, the CPU 216-2 can operate as a PROFIBUS slave connected to an S7-300 or S7-400 master, enabling integration into larger distributed control architectures.
Q4: What programming software is required?
A: STEP 7 Micro/WIN V4.0 SP9 (or later) running on a Windows PC. Connection is made via a PC/PPI or USB/PPI cable to the RS-485 port.
Q5: Do you provide a warranty?
A: Yes. New units carry a 12-month warranty against manufacturing defects. Refurbished units carry a 6-month warranty. Please refer to our warranty policy page for full terms.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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