Shanghai Siemens module 6ES7121HE400XB0 has reliable quality

The 7-1200 series PLC currently has five main models: CPU1211C, CPU1212C, CPU1214C, CPU1215C, and CPU1217C. These models have differences in user memory, body integrated I/O, expansion capability, high-speed counting function and high-speed pulse output capability, PROFINET interface, and computing speed, etc., which can be selected according to actual application needs

Signal Module (SM) * *:
-Responsible for processing input/output signals of digital and analog quantities.
-It can be connected to various sensors and actuators to achieve measurement and control of physical quantities.

Process Module (TM) * *:
-Modules designed for specific process requirements, such as counting modules, positioning modules, etc.
-These modules can simplify the implementation process of complex processes, improve production efficiency and product quality.