Mitsubishi MELSEC-Q QD77MS, User Manual

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14 - 4
Chapter 14 Common Functions
Important
Parameter initialization takes about 10 seconds. (Up to 30 seconds are sometimes
required.)
Do not turn the power ON/OFF or reset the PLC CPU during parameter
initialization. If the power is turned OFF or the PLC CPU module is reset to forcibly
end the process, the data backed up in the flash ROM/internal memory
(nonvolatile) will be lost.
[4] Parameter initialization method
(1) Parameter initialization is carried out using the dedicated instruction
"ZP.PINIT".
(Refer to Chapter 15 "Dedicated Instructions" for details.)
(2) Parameter initialization can also be carried out by the writing of the data
shown in the table below to the QD77MS buffer memory using the TO
command/intelligent function device.
The initialization of the parameter is executed at the time point the data is
written to the QD77MS buffer memory.
Buffer memory address
Setting item
Setting
value
Setting details
QD77MS2
QD77MS4
QD77MS16
Cd.2
Parameter
initialization
request
1 Set "1" (parameter initialization request). 1901 5901
: Refer to Section 5.7 "List of control data" for details on the setting details.
When the initialization is complete, "0" will be set in "
Cd.2
Parameter
initialization request" by the QD77MS automatically.