Separating Data In Byte Units - Mitsubishi Electric MELSEC iQ-F FX5 Programming Manual

Separating data in byte units

WTOB(P)
These instructions separate the 16-bit binary data in the device numbers starting from the one specified by (s) onwards into
(n) byte units, and store the separated data in the device number specified by (d) onwards.
Ladder diagram
(s) (d) (n)
FBD/LD
EN ENO
s d
n
Setting data
■Descriptions, ranges, and data types
Operand Description
(s) Head device where the separation target data is stored
(d) Head device for storing the result of separation in byte unit
(n) Number of byte units
EN Execution condition
ENO Execution result
■Applicable devices
Operand Bit
X, Y, M, L, SM,
F, B, SB, S

(s)

(d)

(n)
Processing details
• These instructions separate the 16-bit binary data in the device numbers starting from the one specified by (s) onwards into
(n) byte units, and store the separated data in the device number specified by (d) onwards.
b15
∙∙∙
(s) (1)
(s)+1 (1)
n
(s)+( -1) *1 (1)
2
(1): Upper byte
(2): Lower byte
(3): Upper byte data
(4): Lower byte data
*1 Values after the decimal point are rounded up.
Word
T, ST, C, D, W, U\G
SD, SW, R
 
 
 
b8 b7 b0
∙∙∙
(2)
(2)
(2)
Structured text
ENO:=WTOB(EN,s,n,d);
ENO:=WTOBP(EN,s,n,d);
Range Data type
 16-bit signed binary

16-bit signed binary
0 to 65535 16-bit unsigned binary

Bit
 Bit
Double word Indirect
specification
Z LC LZ
   
   
   
b15 b8
∙∙∙
(d)
00H
(d)+1 00H
(d)+2 00H
00H
(d)+3
00H
(d)+(n-2)
00H
(d)+(n-1)
Data type (label)
ANY16
ANY16
ANY16
BOOL
BOOL
Constant Others
K, H E $
   
   
   
b7 b0
∙∙∙
(4)
(3)
(4)
(n)
(3)
(4)
(3)
7 BASIC INSTRUCTIONS
7.5 Data Conversion Instructions
7
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