I/O Assignment By Gx Developer; Purpose Of I/O Assignment By Gx Developer - Mitsubishi Electric MELSEC-Q Series User Manual

5 ASSIGNMENT OF I/O NUMBERS

5.6 I/O Assignment by GX Developer

5.6.1 Purpose of I/O assignment by GX Developer

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This section describes the I/O assignment using GX Developer.
I/O assignment by GX Developer is used under the following circumstances.
(1) Reserving points when converting to module other than 16-point
modules
You can reserve the number of points in advance so that you do not have to
change the I/O numbers when the current module will be changed to one with a
different number of I/O points in the future.
For example, you can assign a 32-point I/O module to the slot where a 16-point
I/O module is installed at present.
(2) Preventing I/O numbers from changing when converting modules
You can avoid the change in the I/O numbers when an I/O module other than 16-
point module or intelligent function module is removed due to a malfunction.
(3) Changing the I/O numbers to those used in the program
When the designed programs I/O numbers are different from the actual system
I/O numbers, each modules I/O numbers of base units can be set to program-I/O
numbers.
(4) Setting the input response time of input modules and interrupt
modules (I/O response time)
To match the input response time of the input modules and interrupt modules to
the system, select "Type" in the I/O assignment beforehand. (For details, refer to
Section 7.7.)
(5) Setting the switch of intelligent function modules
To set the switch of the intelligent function module, select "Type" in the I/O
assignment beforehand. (For details, refer to Section 7.8.)
(6) Setting outputs during Basic model QCPU error
To set the output status (retain/clear) of the output modules and intelligent
function modules when the Basic model QCPU stops the operation due to a stop
error, select "Type" in the I/O assignment beforehand.
(7) Setting Basic model QCPU operation during a hardware error of
intelligent function modules
To set the Basic model QCPU operation (continue/stop) during a hardware error
of an intelligent function module, select "Type" in the I/O assignment beforehand.
POINT
(1) The I/O assignment setting of the PLC parameters are made valid when the
PLC is powered on or the Basic model QCPU is reset.
When you have changed the PLC parameter values, power on the PLC again or
reset the Basic model QCPU.
(2) I/O assignment must be made to set the response time of the input module or
make the switch setting of the intelligent function module.
MELSEC-Q
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