56
POINT
•
After installing the memory card turn the memory card insert/removal
switch to on. If not turned to on the memory card cannot be used.
•
Since mount processing is performed again after the memory card is
inserted, note that the scan time of one scan when mount processing is
performed increases by a maximum of 10ms.
(5) When conducting reset
The Q4ARCPU conducts one of the following operations when you want to
initialize the Q4ARCPU because of a parameter change or an error has
occurred, or when you want to clear the device memory data.
(a) Turn the Q4ARCPU's RUN/STOP key switch to the RESET position.
(b) Turn the power supply from On to Off to On.
This operation is called the reset operation and the conducted processing
is called initial processing. (Refer to the Q4ARCPU User
’
s Manual)
(a) For standalone systems the operation using the Q4ARCPU output
hold/reset setting switch status is different.
When the output hold mode is set, the output is not turned to off even
when the reset operation is performed using the Q4ARCPU and the
only thing that is reset is the Q4ARCPU's internal memory. For this
reason, the special function module sometimes malfunctions. To turn
the output off, or to reset the special functions module (initialize the
special functions module) conduct the following 2) operation.
1) When in the output reset mode
Conduct the Q4ARCPU reset operation.
2) When in the output hold mode
a) Turn the Q4ARCPU output hold/reset setting switch to the
output reset side.
b) Conduct the Q4ARCPU reset operation.
c) After conducting reset, return the output hold/reset setting
switch to the output hold side.
(b) For redundant systems when the control system CPU is reset the
control is switch to the standby system CPU which continues to
conduct system control. For this reason, initial of the CPU module or
data clear for the reset CPU module can be conducted, but this does
not affect the modules in the expansion base.
When you want the reset operation to be reflected in the expansion
base, conduct the following operation. At this time there are two
operations depending upon the output hold/reset setting switch status.
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