3. Instructions
140
CS/CJ/NSJ Series Instructions Reference Manual (W474)
LD/LD NOT
Applicable Program Areas
Operands
z Operand Specifications
*1 CJ2 CPU Units only.
Flags
There are no flags affected by this instruction.
Function
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
Function block
definitions
Block program areas Step program areas Subroutines Interrupt tasks
SFC action or
transition programs
Usage OK OK OK OK OK OK
Operand Description Data type Size
--- --- BOOL ---
Area
Word addresses
Indirect DM/EM
addresses
Con-
stants
Registers Flags
Pulse
bits
TR
bits
CIO WR HR AR T C DM EM
@DM
@EM
*DM
*EM
DR IR
Indirect
using IR
TK CF
LD bit
operand
OK OK OK OK OK OK
OK
*1
OK
*1
--- --- --- --- --- OK OK OK OK
OK
LD NOT bit
operand
---
z 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 Basic Input Unit's input terminal is read and used.
z 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 Basic Input Unit's input terminal is read,
reversed, and used.
Bus bar Starting point of block Bus bar Starting point of block
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