Mitsubishi Electric M800VW Series Programming Manual page 351

M800V/M80V Series PLC Programming Manual (1/2)
8 Function Instructions
8.10 Character String Processing Instructions
LEN, LENP: Character string length detection
Setting
Bit devices
data
X Y M L F
S
D
○ ○ ○ ○ ○
[Instruction symbol] [Execution condition]
LEN
LENP
 Setting data
Setting data
Character string or the first number of the device where the character string is
S
stored.
D Number of the device that will store the length of detected character string.
 Functions
LEN
 Detects the length of the character string designated by (S) and stores in the area starting from the device number desig-
nated by (D). Processes the data from the device number designated by (S) to the device number storing "00H" as a char-
acter string.
b15
2nd character
S
S+1 4th character
6th character
S+2
S+n
00H
Indicates the end of character string.
For example, if the ASCII code "ABCDEFGHI" is designated in the area starting from (S), "9" will be stored at (D).
b15
S
42H (B)
S+1
44H (D)
S+2 46H (F)
S+3
48H (H)
S+4
00H
IB-1501667-B
Usable devices
B SB T SM V T C
○ ○
○ ○ ○ ○ ○
Command
Command
Meaning
b8b7 b0
1st character
3rd character
5th character
nth character
b8b7 b0
41H (A)
43H (C)
45H (E)
47H (G)
49H (I)
Con-
Word devices
stant
D R/ZR W SW SD Z
○ ○ ○ ○ ○
○ ○ ○ ○ ○ ○
b15
Length of character
D
string
b15 b0
D 9
330
Digit
Pointer designa- Index
tion
$ P
○
○
○
indicates the sign "LEN".
S D
P S D
Data type
Character string
BIN 16 bits
b0