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MELSEC-Q
1 OVERVIEW
3) By refreshing the intelligent function module data into the remote I/O
module's data register D by the automatic refresh setting of the
intelligent function module parameters, the remote master station can
read/write data from/to the data register D with READ or WRITE
instruction.
QCPU
Remote master station
Remote I/O station
Intelligent function module
GX
Configurator
Intelligent function
module parameters
• Initial settings
• Automatic refresh
settings
Remote I/O module
Intelligent
function module
Data
register D
Buffer
memory
QCPU Master station
WRITE
JP.WRITE
W
R
IT
E
Refresh
4) The automatic refresh setting of the intelligent function parameters
enables the intelligent function module data to be refreshed into the
remote I/O module's data register D. By refreshing the data register D
to the link register W with the parameter of the remote I/O module, the
remote master station can read/write the intelligent function module
data by cyclic transmission.
This method has the advantage that the intelligent function module
parameters created for a QCPU can be applied to the remote I/O
module without making any modifications.
QCPU
Remote master station
Remote I/O station
Intelligent function module
LW
Remote I/O module
Intelligent
function module
QCPU Master station
Link register W Link register LW
Intelligent function
module parameters
• Initial settings
• Automatic refresh
settings
Refresh
Refresh
Link
register W
Data
register D
Buffer
memory
Refresh
GX
Configurator
(b) The interrupt sequence program of the host's CPU module can be started
up using the event issue function. This function reduces the response time
of the system and enables real-time data reception.
(Refer to Section 7.7 "Interrupt Settings".)
END
MAIN
I50
CPU module Network module
Cyclic transmission
MELSECNET/H
Normal
sequence
program
Condition check
Interrupt condition
parameters
• Relay information
• Register data
• Network status
Conditions
matched
Interrupt
sequence
program
IRET