Mitsubishi MELSEC Q Series Programming Manual

7-161
FROM(P),DFRO(P)
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7.8 Buffer memory access instruction 7.8.1 Reading 1-/2-word data from the intelligent function module (FROM(P),DFRO(P))
Program Example
(1) The following program reads the digital value of CH1 of the A68AD mounted at I/O numbers
040 to 05F into D0 when X0 is turned ON. (Reads 1 word of data from address 10 of the
buffer memory.)
[Ladder Mode] [List Mode]
(2) The following program reads the X-axis present value of the AD71 mounted at the I/O
numbers 040 to 05F into D0 and D1, when X0 is turned ON. (Reads data in 2 words from
the address 602 and 603 of the buffer memory.)
[Ladder Mode] [List Mode]
Remark
1. The value of n1 is specified by the upper 3 digits of hexadecimal 4-digit
representation of the head I/O number of the slot in which an intelligent
function module is mounted.
QCPU
LCPU
2. QCPU and LCPU establishe the automatic interlock of the FROM/DFRO
instructions.
Step
Instruction
Device
Step
Instruction
Device
Power
supply
module
CPU QX10 QX10QX10 QX10
Q68
ADV
QY41
P
QY10 QY10
0000
H 0010H 0020H 0030H 0040H 0050H 0070H 0080H
Specify the head I/O number to be read
by K4 or H4.
Head I/O number configured in
the I/O assignment setting
Power
supply
module
CPU Built-in
I/0
Built-in
CC-Link
LX40
C6
LX40
C6
LX40
C6
LX40
C6
L60
AD4
LY10
R2
LY10
R2
LY10
R2
0000
H 0010H 0030H 0040H 0050H 0060H 0070H 0090H 00A0H 00B0H
CPU module
(L26CPU-BT)
Specify the head I/O number to be read
by K6 or H6.
Head I/O number
configured in the
I/O assignment
setting

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English