The Siemens SIMATIC S7-200 CN CPU 226 PLC (6ES7216-2AD23-0XB8) is a compact programmable logic controller designed for industrial automation, machine control, and process sequencing. This CPU 226 CN model combines a 24 V DC power supply with 24 digital DC inputs and 16 transistor-type digital DC outputs, making it suitable for compatible automation systems requiring a larger number of integrated digital I/O points.

The CPU processes signals from sensors, switches, push buttons, and other compatible field devices according to the programmed control logic. Its transistor outputs support switching of compatible DC loads and can be used for high-speed pulse applications on designated outputs within the manufacturer's electrical limits.

The controller provides 16/24 KB of program memory and 10 KB of data memory, as specified for this product family. Two integrated PPI/user-programmable interfaces support communication with compatible programming devices, operator panels, and other supported equipment. Compatible S7-200 expansion modules can extend the system's capabilities when required.

This model belongs to the SIMATIC S7-200 CN regional product family. Siemens identifies it as a spare part and specifies that this CN product has CE approval only. It is intended primarily for compatible existing installations, legacy machine maintenance, and industrial replacement projects. Buyers should confirm regional requirements and programming compatibility before ordering.

Key Features

• Siemens SIMATIC S7-200 CN CPU 226 compact PLC

• Exact order number: 6ES7216-2AD23-0XB8

• 24 V DC power supply

• 24 integrated digital DC inputs

• 16 integrated transistor-type DC outputs

• No integrated relay outputs

• 16/24 KB program memory designation

• 10 KB data memory

• Two PPI/user-programmable communication interfaces

• High-speed counter functionality

• High-speed pulse output support on designated outputs

• Compatible S7-200 expansion module support

• PROFIBUS DP expansion capability with compatible hardware

• Compact design for industrial control cabinets

• Suitable for maintenance of compatible legacy Siemens S7-200 CN systems

Technical Specifications

Specifications are based on published product information for the exact order number. Confirm output-current limits, high-speed output characteristics, wiring requirements, and operating conditions using the applicable Siemens datasheet.

Applications

The Siemens S7-200 CN CPU 226 PLC can be used in compatible industrial automation systems for:

• Industrial machine and equipment control

• Conveyor and material-handling systems

• Packaging and production machinery

• Pump and water-control systems

• Manufacturing and assembly automation

• Sensor monitoring and digital signal processing

• High-speed counting and pulse-control applications

• Industrial process sequencing

• Control-panel maintenance and repair

• Legacy PLC replacement projects

• Compatible industrial communication configurations

Compatibility and Installation

Before ordering, verify that the existing system requires the exact part number 6ES7216-2AD23-0XB8. This version uses a 24 V DC power supply and transistor-type DC outputs. It is not equivalent to the CPU 226 version 6ES7216-2BD23-0XB8, which uses an AC power supply and relay outputs.

Check the power supply, output polarity, connected-load current, expansion modules, communication interfaces, and programming software. Transistor outputs have specific electrical and switching limits; provide appropriate external protection and interface devices where required.

Because this is the CN regional version, verify regional approval requirements and compatibility with the existing installation. Installation and commissioning should be performed by qualified personnel according to Siemens documentation and applicable electrical safety practices.

Product Availability Note

This is a legacy Siemens S7-200 CN product listed as a spare part. Depending on the supplier, availability may include new old stock, used units, or refurbished equipment. Confirm the exact order number, product condition, warranty, and return policy before purchasing.