Input processing capability: It has 16 input channels and can receive 16 external 24V DC digital signals. It can convert signals such as the on - off state of external devices into digital signals that can be recognized by the PLC system, providing input data for the control system. For example, it can be connected to devices like limit switches, buttons, and proximity switches to detect the position and operating status of equipment.
Signal isolation and anti - interference: It usually has a good signal isolation function, which can effectively prevent external interference signals from entering the PLC system, ensuring the accuracy and stability of the input signals. To a certain extent, it can resist interferences such as electromagnetic induction and electrostatic induction, guaranteeing the reliable operation of the system in complex industrial environments.
Diagnostic and indication functions: Generally, it is equipped with status indicator lights, which can intuitively display the input status of each channel. This enables operators and maintenance personnel to quickly determine whether the input signals are normal and whether the module is operating properly. It may also have a certain self - diagnostic function, capable of detecting its own working status, such as power failures and channel failures, and giving alarm or indication signals through specific means.