String Processing Instructions; Comparing String Data - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

7.8

String Processing Instructions

Comparing string data

LD$, AND$, OR$
RnPCPU RnPCPU
RnCPU RnENCPU
(Process) (Redundant)
These instructions compare string data as normally open contacts.
Ladder
LD
AND
OR
( is replaced by $=, $<>, $>, $<=, $<, or $>=.)
FBD/LD
EN ENO
s1
s2
( is replaced by a combination of LDSTRING_, ANDSTRING_, or ORSTRING_ and EQ, NE, GT, LE, LT, or GE.)
*1 The engineering tool with version "1.035M" or later supports the ST.
*2 EQ indicates =, NE indicates <>, GT indicates >, LE indicates <=, LT indicates <, and GE indicates >=.
■Execution condition
Instruction
LD$, AND$, OR$
Setting data
■Description, range, data type
Operand Description
(s1) Comparison data or the start device where the comparison
data is stored
(s2) Comparison data or the start device where the comparison
data is stored
EN Execution condition
ENO Execution result
■Applicable devices
Operand Bit
X, Y, M, L, J\
SM, F, B, SB,
FX, FY
 
(s1)
(s2)  
RnSFCPU RnSFCPU
(Standard) (Safety)
(s1) (s2)
(s1) (s2)
(s1) (s2)
Execution condition
Every scan
Word
T, ST, C, D, W, U\G, J\,
SD, SW, FD, R, U3E\(H)G
ZR, RD
 
 
*1
ST
ENO:=LDSTRING_(EN,s1,s2);
ENO:=ANDSTRING_(EN,s1,s2);
ENO:=ORSTRING_(EN,s1,s2);
( is replaced by any of the following: EQ, NE, GT, LE, LT, GE.)
Range Data type
 String

String
 Bit

Bit
Double word Indirect
Z LT, LST, LZ
LC
  
  
7 APPLICATION INSTRUCTIONS
7.8 String Processing Instructions
*2
*2
Data type (label)
ANYSTRING_SINGL
E
ANYSTRING_SINGL
E
BOOL
BOOL
Constant Others
specification
K, H E $
    
    
7
631