GE Multilin
L30 Line Current Differential System
5-127
5 SETTINGS
5.5 FLEXLOGIC
5
5.5.2 FLEXLOGIC RULES
When forming a FlexLogic equation, the sequence in the linear array of parameters must follow these general rules:
1.
Operands must precede the operator which 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 as
an 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") may only be used
once. If this rule is broken, a syntax error will be declared.
5.5.3 FLEXLOGIC EVALUATION
Each equation is evaluated in the order in which the parameters have been entered.
FlexLogic provides latches which by definition have a memory action, remaining in the set state after the set input
has been asserted. However, they are volatile; that is, they reset on the re-application of control power.
When making changes to settings, all FlexLogic equations are re-compiled whenever any new setting value is
entered, so all latches are automatically reset. If it is necessary to re-initialize FlexLogic during testing, for example,
it is suggested to power the unit down and then back up.
Table 5–12: FLEXLOGIC OPERATORS
TYPE
SYNTAX
DESCRIPTION
NOTES
Editor
INSERT
Insert a parameter in an equation list.
DELETE
Delete a parameter from an equation list.
End
END
The first END encountered signifies the last entry in
the list of processed FlexLogic parameters.
One-shot
POSITIVE ONE SHOT One shot that responds to a positive going edge.
A ‘one shot’ refers to a single input gate
that generates a pulse in response to an
edge on the input. The output from a ‘one
shot’ is True (positive) for only one pass
through the FlexLogic equation. There is a
maximum of 64 ‘one shots’.
NEGATIVE ONE
SHOT
One shot that responds to a negative going edge.
DUAL ONE SHOT
One shot that responds to both the positive and
negative going edges.
Logic
gate
NOT
Logical NOT
Operates on the previous parameter.
OR(2)
OR(16)
2 input OR gate
16 input OR gate
Operates on the 2 previous parameters.
Operates on the 16 previous parameters.
AND(2)
AND(16)
2 input AND gate
16 input AND gate
Operates on the 2 previous parameters.
Operates on the 16 previous parameters.
NOR(2)
NOR(16)
2 input NOR gate
16 input NOR gate
Operates on the 2 previous parameters.
Operates on the 16 previous parameters.
NAND(2)
NAND(16)
2 input NAND gate
16 input NAND gate
Operates on the 2 previous parameters.
Operates on the 16 previous parameters.
XOR(2)
2 input Exclusive OR gate
Operates on the 2 previous parameters.
LATCH (S,R)
Latch (set, reset): reset-dominant
The parameter preceding LATCH(S,R) is
the reset input. The parameter preceding
the reset input is the set input.
Timer
TIMER 1
TIMER 32
Timer set with FlexLogic timer 1 settings.
Timer set with FlexLogic timer 32 settings.
The timer is started by the preceding
parameter. The output of the timer is
TIMER #.
Assign
virtual
output
= Virt Op 1
= Virt Op 96
Assigns previous FlexLogic operand to virtual
output 1.
Assigns previous FlexLogic operand to virtual
output 96.
The virtual output is set by the preceding
parameter
NOTE
Summary of Contents for L30
Page 10: ...x L30 Line Current Differential System GE Multilin TABLE OF CONTENTS ...
Page 30: ...1 20 L30 Line Current Differential System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 370: ...5 244 L30 Line Current Differential System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 464: ...A 10 L30 Line Current Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 600: ...C 30 L30 Line Current Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 610: ...D 10 L30 Line Current Differential System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 622: ...E 12 L30 Line Current Differential System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...
Page 634: ...F 12 L30 Line Current Differential System GE Multilin F 3 WARRANTY APPENDIX F F ...
Page 644: ...x L30 Line Current Differential System GE Multilin INDEX ...
