Parameter Initialization Function; Control Details - Mitsubishi Electric MELSEC Q Series User Manual

10 FUNCTION DETAILS

10.23 Parameter Initialization Function

10.23.1 Control details

This function is used to return the setting data set in the buffer memory of QD74MH
and flash ROM to the factory default.
The parameter initialization is executed by setting "1" in "
initialization request". "0" is automatically set in "parameter initialization request" by
QD74MH after initialization.
Important
Do not turn the system's power ON/OFF or resetting PLC CPU in parameter
initialization. The flash ROM data may be corrupted.
The data that can be initialized by the parameter initialization are shown below.
• Basic parameters
• OPR parameters
• Manual control parameters
• System parameters
• Positioning data
• Servo parameters
(1) Cautions
(a) Execute the parameter initialization when the positioning control do not
execute (PLC READY signal [Y0] OFF). An "error code 1903" will occur if it
is executed at PLD READY ON.
(b) A writing to the flash ROM is up to 100,000 times. If writing exceeds
100,000 times, the writing may be become impossible, and an "error code
1901" will occur.
(c) A PLC CPU reset or system's restart must be executed after the parameter
initialization.
(d) The total number of the flash ROM write and parameter initialization with
the sequence program after the error reset, system's power supply ON or
PLC CPU reset is limiter to up to 25. Writing of the 26th will cause an "error
code 1902". Execute the error reset, system's power cycle or PLC CPU
reset at error occurrence.
(e) A parameter initialization can be executed, after the system's power supply
ON and the PLC READY signal [Y0] is turned ON to OFF. If the parameter
initialization is executed without turning ON the PLC READY signal [Y0]
after the system's power supply ON, a "warning code 10001" will occur and
a writing to the parameter initialization cannot be executed.
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MELSEC-Q
Parameter
Cd.101