CHAPTER 5: SETTINGS FLEXLOGICC70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-1775Table 5-22: FlexLogic operators5.6.2 FlexLogic rulesWhen forming a FlexLogic equation, the sequence in the linear array of parameters must follow these general rules:1. Operands must precede the operator that uses the operands as inputs.2. Operators have only one output. The output of an operator must be used to create a virtual output if it is to be used asan input to two or more operators.3. Assigning the output of an operator to a virtual output terminates the equation.4. A timer operator (for example, "TIMER 1") or virtual output assignment (for example, " = Virt Op 1") can be used onceonly. If this rule is broken, a syntax error is declared.5.6.3 FlexLogic evaluationEach equation is evaluated in the ascending order in which the parameters have been entered.Type Syntax Description NotesEditor INSERT Insert a parameter in an equation listDELETE Delete a parameter from an equation listEnd END The first END encountered signifies the last entry inthe list of processed FlexLogic parametersOne-shot POSITIVE ONE SHOT One shot that responds to a positive going edge A ‘one shot’ refers to a single input gate thatgenerates a pulse in response to an edge onthe input. The output from a ‘one shot’ isTrue (positive) for only one pass through theFlexLogic equation. There is a maximum of64 ‘one shots.’NEGATIVE ONE SHOT One shot that responds to a negative going edgeDUAL ONE SHOT One shot that responds to both the positive andnegative going edgesLogicgateNOT Logical NOT Operates on the previous parameterOR(2)↓OR(16)2 input OR gate↓16 input OR gateOperates on the 2 previous parameters↓Operates on the 16 previous parametersAND(2)↓AND(16)2 input AND gate↓16 input AND gateOperates on the 2 previous parameters↓Operates on the 16 previous parametersNOR(2)↓NOR(16)2 input NOR gate↓16 input NOR gateOperates on the 2 previous parameters↓Operates on the 16 previous parametersNAND(2)↓NAND(16)2 input NAND gate↓16 input NAND gateOperates on the 2 previous parameters↓Operates on the 16 previous parametersXOR(2) 2 input Exclusive OR gate Operates on the 2 previous parametersLATCH (S,R) Latch (set, reset): reset-dominant The parameter preceding LATCH(S,R) is thereset input. The parameter preceding thereset input is the set input.Timer TIMER 1↓TIMER 32Timer set with FlexLogic timer 1 settings↓Timer set with FlexLogic timer 32 settingsThe timer is started by the precedingparameter. The output of the timer isTIMER #.Assignvirtualoutput= Virt Op 1↓= Virt Op 96Assigns previous FlexLogic operand to virtualoutput 1↓Assigns previous FlexLogic operand to virtualoutput 96The virtual output is set by the precedingparameter
