I used the ACE 2013 edition, how can I call the components of the library pneumatic components and hydraulic components, ah, how can I not call ah?. Thank you！
Relay contacts or auxiliary contacts must be directly connected to the circuit to function, of course, by the number and location of the restrictions.
Calling a soft component is essentially extracting its state or data (such as 0 or 1) and using it in program operations. The only way to participate in the program is to represent the soft components, so it can be called or searched indefinitely
A storage unit in which the PLC software element corresponds to the memory of a computer. The status of the soft components can be directly queried in the same PLC.
