Online Module Change Operations - Mitsubishi Electric MELSEC Q Series User Manual

7 ONLINE MODULE CHANGE

7.2 Online Module Change Operations

CPU operation : Executed
FROM/TO
X/Y Dedicated
instruction
refresh instruction
1
1 Access to the intelligent function module device (U \G ) is included.
2 Operating the intelligent function module switches (*3) starts the module and resumes X/Y refresh. When there are initial setting
parameters, operation is performed according to the initial setting parameters.
Hence, if the Y signals are not turned off, analog outputs will be provided at this point. Therefore, always turn off the Y signals that
were turned on by the sequence program.
4 In the absence of the operation marked *4, the operation of the intelligent function module is the operation performed prior to that.
5 If a module is replaced with the one that does not support the extended mode range with either of 4 to 20mA (Extended mode) or 1
to 5V (Extended mode) output range set an intelligent function module switch error occurs. In that case, the extended mode range
cannot be used.
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The following gives the operations performed for Online module change.
: Not executed
GX Configurator
Device
Initial
Monitor/
test
setting
test
parameter
(User operation)
(1) Conversion disable
Turn off all Y signals that
were turned on by a
sequence program. *2
(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 *5
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.
Perform user range restoration
processing by write to buffer
memory at this point.
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.
MELSEC-Q
(Intelligent function module
operation)
Module is operating as usual.
Module stops operating.
RUN LED turns off.
Conversion disabled.
Analog output is 0V/0mA.
*3
X/Y refresh resumes and the
module starts.
RUN LED turns on.
Default operation
(X0 remains off)
When there are initial setting
parameters, operation is
performed according to the initial
setting parameters at this point.
Module operates according
to test operation *4
X0 (Module ready) turns on.
Start is made when X0 turns
from off to on.
Operation is performed
according to the
*4
initial setting sequence.
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