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7
ONLINE MODULE CHANGE
7.2
Online Module Change Operations
The following gives the operations performed for an online module change.
CPU operation
: Executed
Dedi-
FROM/TO
X/Y
cated
*
refresh
instruc-
instruction
1
tion
: Not executed
GX Configurator
Initial
Moni-
Device
setting
tor/
test
parameter
test
(1) Conversion disable
(2) Dismounting of module
(3) Mounting of new module
(5) Resumption of control
*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 in either of 4 to 20mA (Extended mode) or 1 to 5V (Extended mode) range is replaced
online with a module that does not support the extended mode range, an intelligent function module
switch error occurs and the extended mode range is not available.
(User operation)
Turn off all Y signals that
were turned on by a
sequence program.
*2
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.
*5
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.
Perform user range restoration
processing by write to buffer
memory at this point.
Operation check completed
Operate GX Developer to
resume the online module
change mode, and click the
[Execution] button to resume
control.
7.2 Online Module Change Operations
1
2
(Intelligent function
module operation)
Module is operating as usual.
3
Module stops operating.
RUN LED turns off.
Conversion disabled.
Analog output is 0V/0mA.
4
*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.
5
6
Module operates according
*4
to test operation
X0 (Module READY) turns on.
Start is made when X0 turns
from off to on.
7
Operation is performed
according to the initial setting
sequence.
*4
8
7
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