Mitsubishi Electronics QD75D Parameter initialization function, Parameter initialization means

13 COMMON FUNCTIONS

13.2 Parameter initialization function

MELSEC-Q

"The parameter initialization function" is used to return the setting data set in the QD75 buffer memory and flash ROM to their factory-set initial values.

The details shown below explain about the "parameter initialization function".

[1]Parameter initialization means

[2]Control details

[3]Precautions during control

[4]Parameter initialization method

[1]Parameter initialization means

•Initialization is executed with a sequence program.

•Initialization is executed by peripheral device.

Refer to GX Configurator-QP Operating Manual for the execution method by peripheral device.

[2] Control details

The following table shows the setting data initialized by the "parameter initialization function".

(The data initialized are "buffer memory" and " flash ROM " setting data.)

Setting data

Basic parameters (

Pr.1

to

)

Pr.10

Detailed parameters (

to

,

Pr.150 )

Pr.11

Pr.42

OPR basic parameters (

to

)

Pr.43

Pr.48

OPR detailed parameters (

to

)

Pr.49

Pr.57

Positioning data (No.1 to No.600)

Block start data (No.7000 to No.7004)

[3]Precautions during control

(1)Parameter initialization is only executed when the positioning control is not carried out (when the PLC READY signal (Y0) is OFF).

A warning "In PLC READY (warning code: 111)" will occur if executed when the PLC READY signal (Y0) is ON.

(2)A writing to the flash ROM is up to 100,000 times. If writing to the flash ROM exceeds 100,000 times, the writing may become impossible, and a flash ROM write error (error code: 801) will occur.

(3)A "PLC CPU reset" or "PLC power restart" must be carried out after the parameters are initialized.

(4)If an error occurs on the parameter set in the QD75 when the PLC READY signal [Y0] is turned ON, the QD75 READY signal [X0] will not be turned ON and the control cannot be carried out.

Important

Parameter initialization takes about 10 seconds. (Up to 30 seconds are sometimes required.)

Do not turn the power ON/OFF; reset the PLC CPU, etc., during parameter initialization. The flash ROM data may be corrupted.

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