88QB03B-E ABB

When choosing a PLC,first of all,you should have a detailed understanding of the input and output required by the system,that is,how much is the input quantity,how much is the output quantity,which are switch(or digital)quantities,which are analog quantities,and digital output quantities should also be Understand the nature of the load to select t

在选择PLC时，首先应对系统要求的输入、输出有详细的了解，即输入量有多少，输出量有多少，哪些是开关(或数字)量，哪些是模拟量，对于数字型输出量还应了解负载的性质，以选择合适的输出形式(继电器型、晶体管型、双向可控硅型)。he appropriate output form(relay type,transistor type,triac type).