UTLH21 provides many dedicated modules and function modules for various signals and applications in the industrial field, such as temperature, tension, stepper motor drive, oscilloscope, drum sequence generator signals, incremental pulse encoding signals, weighing signals and ultrasonic signals, power measurement and grid synchronisation, and PWM output. They will be various forms of field signals is very convenient to access to the PCC as the core of the digital control system, the user can be required to the application of the system’s I / O channel tens of points, hundreds of points or even thousands of points of expansion and networking.

UTLH21 Inside the PCC module, the CPU data bus is separated from the I/O bus and is configured with an independent I/O processor. The main CPU contains an independent Time Processing Unit (TPU), which handles simple or complex timing tasks at high speed without increasing the CPU load, and its reference timing frequency can be as high as 6.29MHz, so it is now widely used in frequency and phase measurements as well as PWM (Pulse Width Modulation) and other time processing occasions that require extremely high accuracy. The CPU’s main board is integrated with the CPU’s motherboard.

In addition, the CPU’s motherboard integrates a variety of communication interfaces, and the PCC is also a highly open product configured with a variety of communication modules. all digital inputs of the UTLH21 are optically coupled and isolated, and the analogue inputs are RC-filtered, so that it has good resistance to electromagnetic interference. The cyclic scanning operation mechanism also leads to the fact that the processing cycle of the system mainly depends on the size of the application programme. If the programme is complex and huge, the scanning cycle is bound to be longer, which undoubtedly contradicts the requirement of high real-time performance of the I/O channels.