Mitsubishi Electric MELSEC iQ-R Series User Manual page 98

Outline of the processing
The following describes the details of the refresh mode.
CPU (operation
processing area)
(3)
Input (X) device memory
X0
(4)
*3
Y22
Y20
(5)
*1 The remote input refresh area indicates the area to be used when refresh is set to the input (X) in CC-Link IE Controller Network, CC-
Link IE Field Network, MELSECNET/H, or CC-Link.
*2 Data in the engineering tool input area can be turned on or off by the following:
 Test operation of an engineering tool
 Writing data from the network module
 Writing data from an external device using SLMP
*3 Data in the output (Y) device memory can be turned on or off by the following:
 Test operation of an engineering tool
 Writing data from the network module
 Writing data from an external device using SLMP
Item
Input refresh
Output refresh
Execution of an input contact
instruction
Execution of an output contact
instruction
Execution of the OUT instruction
■Input
On/off data of an input module are batch-input to the area for communication with the input module in the CPU module at a
specified timing (at END instruction execution or before specified program execution). The CPU module performs program
operations using the on/off data stored in the input (X) device memory.
■Output
The operation results of the program is output to the output (Y) device memory in the CPU module every time program
operation is performed. Then, the CPU module batch-outputs the on/off data in the output (Y) device memory to an output
module at a specified timing (at END instruction execution or before specified program execution).
8 RUNNING A PROGRAM
96
8.3 Data Communication and I/O Processing
CPU module
Output (Y) device memory
Description
At a specified timing (at END instruction execution or before specified program execution), input data are collectively
read out from the input modules (1), the OR processing with the engineering tool input area and remote input refresh
area is executed, and then the data are stored in the input (X) device memory.
At a specified timing (at END instruction execution or before specified program execution), data in the output (Y)
device memory (2) are collectively output to the output module.
Input data in the input (X) device memory (3) are read out and the program is executed.
Output data in the output (Y) device memory (4) are read out and the program is executed.
The operation result of the program (5) are stored to the output (Y) device memory.
*1
Remote input refresh area
*2
Engineering tool input area
Input module access area
Network module
Input refresh
Input module
(1)
Output refresh
Output module
(2)
Network module