GE Multilin G650 Manual page 287

Generator protection & control system

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5.9 LOGIC CONFIGURATION (PLC EDITOR)

5.9.2.2 LOGIC COMPILATION

The G650 configuration will be made using the basic operations related before and more complex operations can be

developed inside libraries.

All the graphical configuration performed in the Logic configuration editor must be read and interpreted by the PLC as the

G650 engine. The graphical equations must be translated into compiled equations to be understood by the relay. For this

purpose the logic configuration editor provides a compilation option to compile the whole configuration, creating a series of

equations that will form the logical configuration of the element.

The next diagram shows the way compiled logic equations are built.

A single equation is composed of one or more inputs, one or more operations, and one output. The order of equations is

determined by the relative position of their outputs.

In the following example is shown the order of compilation for equations determined by their relative position in the

configuration file:

In this case, equation A is the first to be executed. However, in the second case, the first equation to be executed would be

B, as its output is before the Equation A output.

Figure 5–48: COMPILED LOGIC EQUATIONS

Figure 5–49: ORDER OF EQUATIONS

G650 Generator Protection & Control System

EQUATION A OUTPUT

EQUATION B OUTPUT

EQUATION A OUTPUT

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