Mitsubishi MELSEC Q Series Programming Manual page 894

FROM(P),DFRO(P)
(2) When High Performance model QCPU, Process CPU is used
FROM
FROMP
Setting
Data
n1
n2
D
n3
Function
(1) Reads the data of n3 words from the CPU shared memory address designated by n2 of the
CPU module designated by n1, and stores that data into the area starting from the device
designated by
CPU shared memory address of the High Performance model QCPU and Process CPU
(2) When 0 is specified in n3 as the number of data to be read, no processing is performed.
(3) The number of data to be read changes depending on the target CPU module.
High Performance model QCPU
Process CPU
9-16
Command
Command
n1 : Head I/O number of the reading target CPU module (BIN 16 bits)
n2 : Head address of data to be read (BIN 16 bits)
: Head number of the devices where the read data is stored (BIN 16 bits)
D
n3 : Number of read data (BIN 16 bits)
Internal Devices
R, ZR
Bit Word
––
––
––
––
.
D
Device memory
D
Reads the
data of n3
words
CPU shared memory address
0(0 )
H
Host CPU operation information area
512(200 )
H
2048(800 )
H
Host CPU refresh area
User free area
4095(0FFF )
H
*1 : Usable as a user free area when auto refresh setting is not made.
When auto refresh setting is made, the auto refresh send range and later are usable as a user
free area.
CPU Module Number of Read Points
FROM
n1 n2
n1 n2
FROMP
J \
U \G
Bit Word
––
CPU shared memory of
the designated CPU (n1)
n2
System area
*1
Read designation
permitted area
1 to 4096
n3
D
n3
D
Constants Other
Zn
K, H U
––
–– ––
––
n3