Viewing Flexlogic Graphics - GE 869 Instruction Manual

FLEXLOGIC
Viewing FlexLogic
Graphics
4–390
Logic Designer: This entry can be used to initiate the launch of the 'Logic Designer' screen.
Once chosen, the existing 'FlexLogic Equation Editor' screen is set to Read-only and then
the 'Logic Designer' screen launch is initiated.If the user wants to re-visit the FlexLogic
Editor Screen, any existing read-only screen has to be closed first. Then, the screen has to
be re-opened. The FlexLogic Editor screen is now editable, again.
In order to maintain synchronization of FlexLogic, the following update rules are defined.
For example, when a user tries to open the 'FlexLogic Equation Editor' of a particular
device or file.
• If the 'Logic Designer' screen is open and in Edit mode, a message prompts the user to
save any changes. The 'FlexLogic Equation Editor' is not launched.
• If the 'Logic Designer' is open and in saved mode (no edits to save or compile), the
'Logic Designer' screen is closed and then the 'FlexLogic Equation Editor' launch is
initiated.
To verify that the FlexLogic equation(s) and its selected parameters produce the desired
logic, the expression can be viewed by converting the derived equation into a graphic
diagram. It is strongly recommended and helpful to view an equation as a graphic
diagram before it is saved to the 869 device in order to troubleshoot any possible error in
the equation.
To View the FlexLogic Graphic
Click on the View button at the top of the Type column in the FlexLogic Equation screen,
see previous figure. Provided the equation is entered correctly, this generates a graphical
representation of the expression previously entered. If any operator inputs are missing or
any FlexLogic rules have been violated, the EnerVista 8 Series Setup software displays a
message box indicating any problems in the equation when the view feature is attempted.
The expression is also listed to the left of the diagram to demonstrate how the diagram
was created. The End statement is added as parameter 5 (End of list).
Figure 4-168: FlexLogic Graphic Example
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 4: SETPOINTS