Virtual Logic is a user-friendly application that enables you to construct "ladder logic"-style programs that run on the Hyper SCADA server.
DFS's Virtual Logic Builder provides the extra flexibility of allowing rungs and branches to hold numeric values, including inputs from analog points and the results of math operations, such as ADD and MAXIMUM.
What is Ladder Logic?
Ladder logic is a graphical (symbols and text) language that is used to plan, maintain and control industrial systems. Ladder logic diagrams are built using groups of rungs and branches. Each rung of the ladder is used to control a single output.
The ladder logic diagrams are graphical programs you create to manage complex control functions. These graphical programs are converted into virtual points and auto control points, and are continuously scanned by the system. HT3 is designed to complete one program scan every second. The speed of the scanning process enables you to have the most up-to-date information and react to situations quickly and efficiently.
After a ladder logic diagram has been built and installed, its virtual points and auto controls can be used in custom screens. Custom screens are graphical representations of your SCADA system that can be used to remotely monitor and control your system.
Sample Ladder Logic
The example below shows a portion of a DFS Ladder Logic program. This portion of the progam shows logic that starts a pump.