Operations When An Online Module Change Is Performed - Mitsubishi Electric MELSEC-Q Series User Manual

7 ONLINE MODULE CHANGE

7.2 Operations When an Online Module Change is Performed

Programmable controller CPU operation
: Executed
FROM/TO
X/Y refresh Device test Initial setting
*1
instruction
*1: An access to the intelligent function module device (U \G ) is included.
*2: The intelligent function module operates according to the previous setting when the user does not perform any operation.
*3: The numbers (1) to (5) correspond to the steps of the online module change procedure in Section 7.3.
7 - 3
The following table lists the operations of the Q62HLC when an online module change
is performed.
: Not executed
GX Configurator
Monitor/
parameter test
(User operation)
(1) Operation stop
Turn off all Y signals that
were turned on by
a sequence program.
(2) Dismounting of module
Operate GX Developer to
start an online module change.
Click the [Execution] button
of GX Developer to make
the module dismountable.
Dismount the corresponding
module.
(3) Mounting of new module
Mount a new module.
After mounting the module,
click the [Execution] button
of GX Developer.
Operation check before control start
(4) Operation check
Click the [Cancel] button of
GX Developer to leave
the online mode.
Conduct an operation test
on the new module using
"Device test" of GX Developer
or "Monitor/test" of
GX Configurator.
Operation check completed
(5) Resumption of control
Operate GX Developer to
resume the online module
change mode, and click the
[Execution] button to resume
control.
Terminate the online
module change operation.
MELSEC-Q
(Intelligent function module
*3
Module is operating as usual.
Module stops operating.
RUN LED turns off.
X/Y refresh resumes and
the module starts.
RUN LED turns on.
Default operation
(Xn3 remains.)
When there are initial setting
parameters, operation is
performed according to the initial
setting parameters at this point.
Module operates according
to test operation.*
Xn3 (Module ready flag)
turns on.
Start is made when Xn3 turns
from off to on.
Operation is performed
according to the initial setting
sequence.*
operation)
2
2
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