1771-NIV is a PLC that builds PLC system software into the controller, customises the hardware according to the user’s control needs, and solves the object control problems in the way of PLC application.It consists of two parts: the embedded PLC system software and the chipset. Embedded PLC system software will PLC language (ladder language), CAN bus embedded in the microcontroller, so that the product development of the microcontroller from the use of assembly language to the use of PLC ladder language, and CAN bus interconnection characteristics.

1771-NIV has the following characteristics: 1. ladder language as the core, adding the interrupt management system, can achieve the hard real-time operation of the PLC can not be achieved; 2. strengthen the computing power, increase the CANBUS function library, floating point library, expert self-tuning PID, embedded WEB, etc., enriching the PLC’s functionality; 3. to provide an open expansion structure, support for the third-party development of the extended Wiring of the unit; 4. Increased network interconnection function, after loading a special browser on the remote end, remote monitoring can be achieved.

1771-NIV system software includes:
① Embedded PLC kernel: it completes the basic functions of real-time task scheduling, ladder language interpretation, execution, communication, etc., and provides a secondary development driver interface;
② secondary development driver Through the external tasks provided by the system software, use the kernel to develop a variety of personalised and differentiated drivers for specific objects;
③ Terminal application refers to the ladder diagram language programme for process control.