
4Ć134 FST Configuration
Original Ć June 1990CE4.2:CL6211
PFR PFR
73
INSTRUCTION NAME: PFR (power fail restart)
DESCRIPTION : This instruction sets the SVD output to 1 during the first FST execution (cycle)
following a power restart. For the second and all other executions, the SVD output is 0. The SVA
input remains unchanged.
GRAPHIC REPRESENTATION: SYMBOLIC REPRESENTATION:
INPUT
1
0
OUTPUT
t
0
NOT APPLICABLE
POWER UP
CONFIGURATION FORMAT: PFR
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OPERAND DESCRIPTIONS:
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FUNCTION EQUATIONS:
If first FST execution after power restart,
Then SVD(out) = 1
If second or more executions,
Then SVD(out) = 0
SVA(out) = SVA(in)
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