Reading 1-Word/2-Word Data From Another Module (16-Bit Specification) - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

Reading 1-word/2-word data from another module (16-bit
specification)
FROM(P), DFROM(P)
RnPCPU RnPCPU
RnCPU RnENCPU
(Process) (Redundant)
• FROM(P):
These instructions read n words of data from the buffer memory address in the specified module or another CPU module.
• DFROM(P):
These instructions read n2 words of data from the buffer memory address in the specified module or another CPU module.
Ladder
(U/H) (s) (d)
FBD/LD
EN ENO
U/H d
s
n
■Execution condition
Instruction
FROM
DFROM
FROMP
DFROMP
Setting data
■Description, range, data type
Operand Description
(U/H) Start I/O number (first three digits in four-digit
hexadecimal representation) of a module or CPU
module
(s) Start address of buffer memory or CPU built-in
memory containing the data to be read
(d) FROM(P) Start device for storing the data that has been
read
DFROM(P)
(n) Number of read data
EN Execution condition
ENO Execution result
*1 When specifying setting data by using a label, define an array to secure enough operation area and specify an element of the array
label.
RnSFCPU RnSFCPU
(Standard) (Safety)
(n)
Execution condition
ST
ENO:=FROM(EN,U/H,s,n,d);
ENO:=FROMP(EN,U/H,s,n,d);
ENO:=DFROM(EN,U/H,s,n,d);
ENO:=DFROMP(EN,U/H,s,n,d);
Range Data type
0H to FFH, 3E0H to 3E3H 16-bit unsigned binary
0 to 65535 16-bit unsigned binary

16-bit signed binary
32-bit signed binary
0 to 65535 16-bit unsigned binary
 Bit

Bit
7 APPLICATION INSTRUCTIONS
Data type (label)
ANY16
ANY16
*1
ANY16
*1
ANY32
ANY16
BOOL
BOOL
7.27 Module Access Instructions
7
1045