Siemens 6ES-

Siemens offers a wide variety of industrial automation module products that start with the prefix 6ES. These products include:

Central processing units (CPUs): CPUs are the brains of a Siemens automation system. They are responsible for executing control programs, communicating with other devices, and monitoring the system. Some popular Siemens CPUs that start with the 6ES prefix include the SIMATIC S7-1200 and S7-1500 CPUs.
Input/output (I/O) modules: I/O modules allow you to connect sensors and actuators to your Siemens automation system. Sensors provide information about the physical world, such as temperature, pressure, and flow. Actuators are devices that can take physical actions, such as turning on a motor or opening a valve. Some popular Siemens I/O modules that start with the 6ES prefix include the SIMATIC S7-1200 and S7-1500 I/O modules.
Communication modules: Communication modules allow you to connect your Siemens automation system to other devices, such as other PLCs, HMIs, and SCADA systems. Some popular Siemens communication modules that start with the 6ES prefix include the CP 342-1 and CP 343-1.