The Siemens part number 6ES7155-6AU01-0CN0 corresponds to the Simatic ET 200SP Technology Module. This module is used in Siemens PLC systems to provide advanced technology functions and expand the capabilities of the system.

Here are some key features and specifications of the 6ES7155-6AU01-0CN0 module:

Digital I/O channels: The module provides digital input and output channels. The exact number and configuration of the channels may vary depending on the specific model variant.

Technology functions: The module offers advanced technology functions such as counting, measuring, and position detection. These functions enable precise control and monitoring of processes and machinery.

Communication interfaces: The module may include communication interfaces, such as Profibus or Profinet, to enable connectivity with other devices or networks.

Backplane bus connection: The module is connected to the PLC CPU and other modules in the Simatic ET 200SP system via the backplane bus.

Diagnostic and status indicators: The module includes diagnostic LEDs and status indicators to provide visual feedback on the module's operation and assist in troubleshooting.

The 6ES7155-6AU01-0CN0 module is part of the Siemens Simatic ET 200SP system and can be integrated with other modules to create a flexible and expandable automation solution.