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5 DATA USED FOR POSITIONING CONTROL
5.1 Types of data
5.1.1 Parameters and data required for control
Setting data
(Data set beforehand according to the machine and application, and stored in the flash ROM.)
Parameters
)
Pr.1
to
)
Pr.57
)
Positioning data
)
Da.1
to
Da.10
)
Block start data
)
Da.11
to
Da.19
)
The parameters and data required to carry out control with the QD75 include the
"setting data", "monitor data" and "control data" shown below.
Positioning
Basic parameters 1
parameters
Basic parameters 2
to
Pr.1
Pr.42
,
Pr.150
)
Note)
Detailed parameters 1
Detailed parameters 2
Note)
Detailed parameters 2 are data items for using the QD75 functions to the fullest.
Set as required.
OPR
OPR basic parameters
parameters
OPR detailed parameters
)
to
)
Pr.43
Pr.57
Positioning data
Block start data
)
Da.11
to
Da.14
Condition data
)
to
Da.15
Da.19
Memo data
The data is set with the sequence program or peripheral device.
In this chapter, the method using the peripheral device will be explained.
(Refer to "Point" on the next page.)
The basic parameters 1, detailed parameters 1, and OPR parameters become valid
when the PLC READY signal [Y0] turns from OFF to ON. Note, however, that the
only valid value of the "
the PLC READY signal [Y0] turns from OFF to ON for the first time after the power
is switched ON or the PLC CPU is reset. Once the PLC READY signal [Y0] has
been turned ON, the value will not be reset even if another value is set to the
parameter and the PLC READY signal [Y0] is turned from OFF to ON.
The basic parameters 2 and detailed parameters 2 become valid immediately when
they are written to the buffer memory, regardless of the state of the PLC READY
signal [Y0].
Even when the PLC READY signal [Y0] is ON, the values or contents of the
following can be changed: basic parameters 2, detailed parameters 2, positioning
data, and block start data.
Set according to the machine and applicable
motor when system is started up.
If the setting of the basic parameters 1 is incorrect, the rotation direction
may be reversed, or no operation may take place.
Set according to the system configuration when
the system is started up.
Set the data for "major positioning control".
Set the block start data for "high-level positioning control".
)
Set the condition data for "high-level positioning control".
)
Set the condition judgment values for the condition
data used in "high-level positioning control".
Pr.5
Pulse output mode" is the value at the moment when
5 - 2
MELSEC-Q
Set the values required for carrying
out OPR control.
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Troubleshooting
