YPN107A YT204001-DM ABB

PLC can be divided into two types:integral type and modular type according to the structure.The average price of all I/O interfaces of integral type PLC is lower than that of modular type,and it is small in size and light in weight.Therefore,it is usually used in small control systems with strict system process production;modular PLC has flexible configuration,convenient function expansion,and provides a variety of I/O interfaces or slots,so users can accurately select and configure the I/O of the control system.O interface quantity,as long as the unit is replaced during maintenance,the design of troubleshooting is also very simple,so the modular PLC is usually used in complex systems and large and medium-sized control systems.

PLC按结构分有整体式和模块式两种，整体型PLC的全部I/O接口的均价格比模块型的低廉，体积小重量轻。因此通常应用在系统工艺生产较为严格的小型控制系统中；模块式PLC的配置灵活，功能扩展方便，提供多种I/O接口或插槽，所以用户能够准确地选择和配置控制系统的I/O接口量，维修时只要更换单元，排除故障的设计也很简单，所以模块型PLC通常应用在复杂系统和大中型控制系统。