Buffer Memory Access Instructions; Reading 1-/2-Word Data From Intelligent Function Module - Mitsubishi MELSEC-Q Series Programming Manual

7.8

Buffer Memory Access Instructions

7.8.1

Reading 1-/2-word data from intelligent function module

FROM(P)
DFRO(P)
Structured ladder
FROM
EN ENO
n1 d
n2
n3
Input argument, EN:
Executing condition
n1: Start I/O number of the intelligent function module
n2: Start address of data to be read
n3:
Number of data to be read
Output argument, ENO: Execution result
d: Read data
Setting
data
n1
n2
n3
d
Function
FROM(P)
(1) Reads the data in n3 words from the buffer memory address specified for n2 of the intelligent
function module specified for n1, and stores the data to the device specified for
following devices.
Intelligent function module
buffer memory
n2
P: Executing condition
ST
ENO:= (EN, n1, n2, n3, d);
FROM
Internal device
R, ZR
Bit Word Bit
Device specified
for d
n3 words
7.8.1 Reading 1-/2-word data from intelligent function module
indicates any of the following
instructions.
FROM
DFRO
:Bit
:ANY16
:ANY16
:ANY16
:Bit
:ANY16/32
J \
U \G
Word
−
CPU module

7.8 Buffer Memory Access Instructions

FROM, DFRO
FROM, DFRO
High
Universal Performance
UD
:
FROMP
DFROP
Constant Others
Zn
K, H U
−
−
−
and the
d
n3 points
7-125
7