684
FROM, FROMP, DFRO, DFROP
When High Performance model QCPU, Process CPU is used
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)
n3
: Number of read data (BIN 16 bits)
F
unct
i
on
(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
*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.
(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.
Read of data from the CPU shared memory can also be performed using the intelligent function module devices.
For intelligent function module device, refer to the QnUCPU User's Manual (Function Explanation, Program Fundamentals)
or Qn(H)/QnPH/QnPRHCPU User's Manual (Function Explanation, Program Fundamentals).
Setting
Data
Internal Devices
R, ZR
J \
U \G
Zn
Constants
K, H
Other
U
Bit
Word
Bit
Word
n1
––
n2
––
––
––
––
––
––
n3
––
––
CPU Module
Number of Read Points
High Performance model QCPU
Process CPU
1 to 4096
Command
Command
n3
n3
n1
n1
n2
n2
D
D
FROM
FROMP
F
ROM
F
ROMP
D
D
D
De
v
ice memory
CP
U
shared memory of
the designated CP
U
(n1)
n3
Reads the
data of n3
w
ords
n2
D
0(0
H
)
512(200
H
)
2048(800
H
)
4095(0FFF
H
)
Read designation
permitted area
Host CP
U
operation information area
CP
U
shared memory address
System area
Host CP
U
refresh area
*1
U
ser free area