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2-21
2 Instructions
CP1E CPU Unit Instructions Reference Manual(W483)
Sequence Output Instructions
2
KEEP
KEEP
Applicable Program Areas
Operands
Operand Specifications
Flags
No flags are affected by KEEP(011).
Function
Instruction Mnemonic Variations
Function
code
Function
KEEP KEEP !KEEP 011 Operates like a latching relay.
Symbol
KEEP
Area Step program areas Subroutines Interrupt tasks
Usage OK OK OK
Operand Description Data type Size
R Bit BOOL ---
Area
Word addresses Indirect DM addresses
Constants CF Pulse bits TR bits
CIO WR HR AR T C DM @DM *DM
R OK OK OK OK --- --- --- --- --- --- --- --- OK
When S turns ON, the designated bit will go
ON and stay ON until reset, regardless of
whether S stays ON or goes OFF. When R
turns ON, the designated bit will go OFF. The
relationship between execution conditions and
KEEP(011) bit status is shown below on the
right.
KEEP(011)
R
S(SET)
R(RESET)
R: Bit
ON
OFF
ON
OFF
ON
OFF
Status of C
S execution condition
R execution condition
=
CA
B
A
C
B
Set
Reset
KEEP
C