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3. Instructions
LD/LD NOT
Instruction
LOAD
LOAD NOT
Symbol
Applicable Program Areas
Function block
Area
definitions
Usage
OK
Operands
Operand
---
Operand Specifications
Word addresses
Area
CIO
WR
HR
AR
LD bit
operand
OK
OK
OK
OK
LD NOT bit
operand
*1 CJ2 CPU Units only.
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 Basic Input Unit's 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 Basic Input Unit's input terminal is read,
reversed, and used.
136
Mnemonic
Variations
@LD, %LD, !LD,
LD
!@LD, !%LD
@LD NOT, %LD
NOT, ! LD NOT,
LD NOT
!@LD NOT, !%LD
NOT
LD
Bus bar
Starting point of block
Block program areas
Step program areas
OK
OK
Description
---
Indirect DM/EM
@DM
T
C
DM
EM
@EM
*1
*1
OK
OK
OK
OK
Function
code
Indicates a logical start and creates an ON/OFF
---
execution condition based on the ON/OFF status
of the specified operand bit.
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.
Bus bar
Subroutines
OK
Data type
BOOL
Registers
addresses
Con-
stants
*DM
DR
*EM
---
---
---
---
CS/CJ/NSJ Series Instructions Reference Manual (W474)
Function
LD NOT
Starting point of block
SFC action or
Interrupt tasks
transition programs
OK
OK
Size
---
Flags
Pulse
bits
Indirect
IR
TK
CF
using IR
---
OK
OK
OK
OK
TR
bits
OK
---
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