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2 Instructions
CP1E CPU Unit Instructions Reference Manual(W483)
Sequence Input Instructions
2
LD/LD NOT
LD/LD NOT
Applicable Program Areas
Operands
Operand Specifications
Flags
There are no flags affected by this instruction.
Function
LD
LD is used for the first normally open bit from the bus bar or for the first normally open bit of a logic
block. If there is no immediate refreshing specification, the specified bit in I/O memory is read. If there is
an immediate refreshing specification, the status of the CPU Unit’s built-in input terminal is read and
used.
LD NOT
LD NOT is used for the first normally closed bit from the bus bar, or for the first normally closed bit of a
logic block. If there is no immediate refreshing specification, the specified bit in I/O memory is read and
reversed. If there is an immediate refreshing specification, the status of the CPU Unit’s built-in input ter-
minal is read, reversed, and used.
Instruction Mnemonic Variations
Function
code
Function
LOAD LD
@LD, %LD, !LD,
!@LD, !%LD
---
Indicates a logical start and creates an ON/OFF
execution condition based on the ON/OFF status
of the specified operand bit.
LOAD NOT LD NOT
@LD NOT, %LD
NOT, ! LD NOT,
!@LD NOT, !%LD
NOT
---
Indicates a logical start and creates an ON/OFF
execution condition based on the reverse of the
ON/OFF status of the specified operand bit.
Symbol
LD LD NOT
Area Step program areas Subroutines Interrupt tasks
Usage OK OK OK
Operand Description Data type Size
--- --- BOOL ---
Area
Word addresses Indirect DM addresses
Constants CF Pulse bits TR bits
CIO WR HR AR T C DM @DM *DM
LD
OK OK OK OK OK OK
---
--- --- --- OK OK
OK
LD NOT ---
Bus bar Starting point of block
Bus bar Starting point of block