Mitsubishi Electric QJ71DN91, User Manual

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MELSEC-Q
4 FUNCTIONS
(2) Reading/writing I/O data
(a) I/O data are stored in the following buffer memory areas.
Buffer memory
address (Hex.)
Item Description
Reference
section
0700
H
to 07FF
H
Master function
receive data
Data received from each slave node are stored.
3.4.6
0900
H
to 09FF
H
Master function
transmit data
Data to be sent to each slave node are set.
(b) Data transfer between the buffer memory and programmable controller
CPU devices
Transfer method
Description Data consistency
Reference
section
Auto refresh Configure the auto refresh settings
in GX Configurator-DN.
Not ensured 7.4.1
MOV or FROM/TO
instruction
Configure the settings in sequence
programs.
Not ensured
7.4.2 Data consistency
dedicated instruction
(DNTMRD, DNTMWR)
Ensured
(3) Operation flow
This section explains how I/O communication is performed with each slave node.
(a) When starting I/O communication by I/O Communication Request (Y11)
1)
3)
3)
4)
5)
7)
6)
2)
Module Ready (X0F)
Auto Configuration
Request (Y15)
Request for Saving
Parameters to
Flash ROM (Y17)
I/O Communication
Request (Y11)
I/O Communicating
(X01)
Error Set Signal for
Master Function (X03)
Error Information for
Master Function (01B1
H
)
Parameters for Master
Function (01D4
H
to 03CF
H
)
Master Function Receive
Data (0700
H
to 07FF
H
)
Master Function Transmit
Data (0900
H
to 09FF
H
)
MOV/TO
instruction
1)
Data consistency dedicated
instruction for master
function (bit 0 of 0633
H
)
MOV/TO
instruction
Parameter
check
MOV/FROM
instruction
MOV/TO
instruction
MOV/FROM instruction or
DNTMRD
MOV/TO instruction or
DNTMWR
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
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