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FROM, FROMP, DFRO, DFROP
7.8
Buffer memory access instruction
7.8.1
FROM, FROMP
Reading 1-word data from the intelligent function module
DFRO, DFROP
Reading 2-word data from the intelligent function module
7.8.1
FROM, FROMP, DFRO, DFROP
FROM, DFRO
FROMP, DFROP
n1
: Head I/O number of an intelligent function module (BIN 16 bits)
n2
: Head address of the buffer memory where data to be read is stored (BIN 16 bits)
: Head number of the devices where the read data will be stored (BIN 16/32 bits)
D
n3
: Number of data blocks to be read (BIN 16 bits)
Setting
Internal Devices
Data
Bit
n1
n2
D
n3
*1:
Specified with the upper three digits when the head I/O number is expressed in 4 hexadecimal digits.
Function
FROM
(1) Reads the data in n3 words from the buffer memory address designated by n2 of the intelligent function module
designated by n1, and stores the data into the area starting from the device designated by
Intelligent function module
buffer memory
n2
DFRO
(1) Reads the data in (n3
designated by n1, and stores the data into the area starting from the device designated by
Intelligent function module
buffer memory
n2
n2+1
Data read from intelligent function modules is also possible with the use of an intelligent function module device.
For the 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).
426
Command
Command
*1
R, ZR
Word
Bit
Device designated
by D
n3 words
2) words from the buffer memory address designated by n2 of the the intelligent function module
Device designated
by
(n3 2) words
High
Basic
performance
indicates an instruction symbol of FROM/DFRO.
n1
n2
P
n1
n2
J
\
U
\G
Word
––
CPU module
CPU module
D
Process
Redundant Universal
LCPU
D
n3
D
n3
Constants
Other
Zn
K, H
U
––
––
––
.
D
n3 points
.
D
(n3 2) points
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