Flexlogic Rules - GE B30 UR Series Instruction Manual

5.5 FLEXLOGIC
Table 5–8: FLEXLOGIC GATE CHARACTERISTICS
GATES NUMBER OF INPUTS
NOT
OR
AND
NOR
NAND
XOR
Table 5–9: FLEXLOGIC OPERATORS
TYPE SYNTAX
Editor INSERT
DELETE
End END
One-shot POSITIVE ONE SHOT One shot that responds to a positive going edge.
NEGATIVE ONE
SHOT
DUAL ONE SHOT
Logic NOT
gate
5
OR(2)
↓
OR(16)
AND(2)
↓
AND(16)
NOR(2)
↓
NOR(16)
NAND(2)
↓
NAND(16)
XOR(2)
LATCH (S,R)
Timer TIMER 1
↓
TIMER 32
Assign = Virt Op 1
↓
virtual
output = Virt Op 96
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.
5-108
OUTPUT IS '1' (= ON) IF...
1 input is '0'
2 to 16 any input is '1'
2 to 16 all inputs are '1'
2 to 16 all inputs are '0'
2 to 16 any input is '0'
2 only one input is '1'
DESCRIPTION
Insert a parameter in an equation list.
Delete a parameter from an equation list.
The first END encountered signifies the last entry in
the list of processed FlexLogic parameters.
One shot that responds to a negative going edge.
One shot that responds to both the positive and
negative going edges.
Logical NOT
2 input OR gate
↓
16 input OR gate
2 input AND gate
↓
16 input AND gate
2 input NOR gate
↓
16 input NOR gate
2 input NAND gate
↓
16 input NAND gate
2 input Exclusive OR gate
Latch (set, reset): reset-dominant
Timer set with FlexLogic timer 1 settings.
↓
Timer set with FlexLogic timer 32 settings.
Assigns previous FlexLogic operand to virtual
output 1.
↓
Assigns previous FlexLogic operand to virtual
output 96.
B30 Bus Differential System
5 SETTINGS
NOTES
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'.
Operates on the previous parameter.
Operates on the 2 previous parameters.
↓
Operates on the 16 previous parameters.
Operates on the 2 previous parameters.
↓
Operates on the 16 previous parameters.
Operates on the 2 previous parameters.
↓
Operates on the 16 previous parameters.
Operates on the 2 previous parameters.
↓
Operates on the 16 previous parameters.
Operates on the 2 previous parameters.
The parameter preceding LATCH(S,R) is
the reset input. The parameter preceding
the reset input is the set input.
The timer is started by the preceding
parameter. The output of the timer is
TIMER #.
The virtual output is set by the preceding
parameter

5.5.2 FLEXLOGIC RULES

GE Multilin