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19 Applied Instructions (Data Operation 2)
19.3 BTOW / BYTE to WORD
503
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
11
Applied Instructions
(Data Operation)
12
Applied Instructions
(High Speed
Processing)
13
Applied Instructions
(Handy
Instruction)
14
Applied Instructions
(External FX I/O
Device)
15
Applied Instructions
(External Device
(optional device))
16
Applied Instructions
(External Device)
17
Applied Instructions
(Data Transfer 2)
18
Applied Instructions
(Floating Point)
19
Applied Instructions
(Data Operation 2)
20
Applied Instructions
(Positioning
Control)
19.3 BTOW / BYTE to WORD
Outline
This instruction couples the lower 8 bits (lower byte) of continuous 16-bit data.
1. Format and operation, execution form
2. Set data
3. Applicable devices
Function and operation explanation
1. 16-bit operation (BTOW/BTOWP)
1) This instruction stores the 16-bit data coupling lower byte (8 bit) of 16-bit data of n points from the device
specified by , into n/2 devices starting from as follows.
FX3U(C) FX3G(C) FX3S FX2N(C) FX1N(C) FX1S FXU/FX2C FX0N FX0(S)
Instruction
name
Operation
Execution
form
Expression in each language
Structured ladder/FBD ST
BTOW 16 bits Continuous BTOW(EN, s, n, d);
BTOWP 16 bits Pulse BTOWP(EN, s, n, d);
Variable Description Data type
Input
variable
EN Execution condition Bit
Head device for storing the data to be coupled in byte unit. ANY16
Number of byte data to be coupled (0≤n) ANY16
Output
variable
ENO Execution state Bit
Head device for storing the coupled result in byte unit. ANY16
Operand
type
Bit Devices Word Devices Others
System user Digit designation
System
user
Special
unit
Index
Cons
tant
Real
Number
Character
String
Pointer
XYMTCS
D
.b
KnX KnY KnM KnS T C D R
U\G
V Z Modifier K H E
""
P
zzzz z
zz zz
zzzz z
BTOW
EN
s
n
ENO
d
BTOWP
EN
s
n
ENO
d
BTOWP
EN
s
n
ENO
d
Head device for storing the coupled result in byte unit.
Command
input
Head device of data to be coupled
Number of byte data to be coupled
b15 b8 b7 b0
+0
+1
Higher bytes are ignored.
+2
+n-1
n bytes
First byte data
Second byte data
Third byte data
n-th byte data
+0
+1
+n/2
*
Second byte
Fourth byte
n-th byte
First byte
Third bytes
n-1-th byte
b15 b8 b7 b0
* If n is an odd number, refer to 3).
ds