7 APPLICATION INSTRUCTIONS
7.8 String Processing Instructions
691
7
Extracting string data from the left
LEFT(P)
These instructions extract (n) characters of data from the left of the string data, and store the extracted data in the device
number specified by (d) and later.
*1 The LEFT instruction does not support the ST and FBD/LD. Use the standard function, LEFT.
Page 1946 LEFT(_E), RIGHT(_E)
■Execution condition
■Descriptions, ranges, and data types
■Applicable devices
Ladder ST
*1
ENO:=LEFTP(EN,s,n,d);
FBD/LD
*1
Instruction Execution condition
LEFT
LEFTP
Operand Description Range Data type Data type (label)
(s) Character string or the start device containing the character
string
String ANYSTRING_SINGLE
(d) Start device for storing (n) characters of character string
extracted from the left of the data in the device specified by (s)
String ANYSTRING_SINGLE
(n) Number of characters to be extracted 1 to 16383 16-bit unsigned binary ANY16
EN Execution condition Bit BOOL
ENO Execution result Bit BOOL
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB,
FX, FY
J\ T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD
U\G, J\,
U3E\(H)G
Z LT, LST,
LC
LZ K, H E $
(s)
(d)
(n)
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant)
(Process)