Series:Control System

  Product Description

  Compared with parallel expansion bus,NSSM01 ABB super loop serial module simplifies system wiring,reduces circuit board area,saves system resources,and has advantages such as good scalability,convenient programming,and easy modularization and standardization of user system software and hardware.At present,the commonly used serial extension interfaces and serial extension buses in microcontroller application systems include 1-wire bus,SPI bus,and IIC bus.

  In control and monitoring systems,although network communication is widely used due to its fast speed and convenient interoperability,there are still many devices that are not suitable or suitable for network communication,which requires a serial port to supplement.

  In the RS-232,RS-422,and RS-485 serial data interface standards,the RS-232 serial bus standard has shortcomings such as short communication distance and low transmission rate,and the X-range used in control and monitoring systems is becoming smaller and smaller.The RS-422 and RS-485 serial data interface standards adopt a combination of balanced drivers and differential receivers,which has good noise interference resistance,long transmission distance,and high speed.Due to these characteristics,it has been widely used in various control and monitoring systems.

  However,in practical use,due to the large number of control and monitoring system equipment,remote communication lines,and various interferences caused by the special environment,communication reliability and stability are often low,resulting in the quality of networked systems not being guaranteed.This article analyzes the factors that affect the communication reliability of multi machine systems based on serial bus networks from multiple perspectives,and proposes effective solutions.

  application area

  The NSSM01 ABB super loop serial module is widely used in automated production lines in various industries such as power,petrochemical,pharmaceutical,food and beverage,etc.It can achieve automated control and monitoring,improve production efficiency and work safety.