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14 Applied Instructions (External FX I/O Device)
14.10 TO / Write To A Special Function Block
387
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)
3. Applicable devices
S: Refer to "Cautions".
Function and operation explanation
1. 16-bit operation (TO, TOP)
→ As for common terms of FROM/TO instruction, refer to section 14.8.1.
From PLC (word device) to special extension (BFM)
You can transfer (write) 16-bit data for the portion of n3 points starting from buffer memory (BFM) n2 in
special extension unit/block of unit number n1, and for the portion of n3 points starting from the device
specified by in PLC.
2. 32-bit operation (DTO, DTOP)
From PLC (word device) to special extension (BFM)
You can transfer (write) 32-bit data for the portion of n3 points starting from buffer memory (BFM) [n2+1, n2]
in special extension unit/block of unit number n1, and for the portion of n3 points starting from the device
specified by in PLC.
Related devices
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
VZModifierKH E
""
P
zzzzzzz
S1
zz z z z
S1 S1
zz
S1 S1
zz
S1 S1
zz
Device Name Content
M8028 Interrupt permit flag
Prohibit/permit interruption during execution of FROM/TO instruction.
→ As for detail, refer to Subsection 14.8.1 "Interrupt accept during
execution of FROM/TO (M8028)"
OFF : Interrupt prohibit (interrupt executed after FROM/TO instruction process)
ON : Interrupt permit
Command input
TO
EN
s
n1
ENO
n2
Transfer source data or
device
Unit No. of special
extension unit/block
Transfer destination buffer
memory (BFM) number
n3
Number of transfer points
Command input
DTO
EN
s
n1
ENO
n2
Transfer source data or
device
Unit No. of special
extension unit/block
Transfer destination buffer
memory (BFM) number
n3
Number of transfer points