Mitsubishi Electric MELSEC iQ-R RD75P4, User Manual

Page: 147 / 598

3 MAJOR POSITIONING CONTROL
3.2 Positioning Data Setting
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3
Current value change
In the current value change, the value in [Md.20] Current feed value of the stopping axis is changed to an address. (The value
in [Md.21] Machine feed value is not changed even if the current value is changed.)
One of the following two methods can be used for changing the current value.
• When the current value is changed using positioning data
• When the current value is changed using the start No. for a current value change (No.9003)
The positioning data can be used during the continuous positioning of multiple blocks.
When the current value is changed using positioning data
In Current value change ([Da.2] Control method = Current value change), the value in [Md.20] Current feed value is changed
to the address set in [Da.6] Positioning address/movement amount.
■
Operation chart
The following shows the operation timing of the current value change. When Positioning start signal is turned on, the value in
[Md.20] Current feed value is changed to the value set in [Da.6] Positioning address/movement amount.
■ Restrictions
• If Continuous path control is set in [Da.1] Operation pattern, New current value not possible (Error code: 1A1CH) occurs
and the control will not start. (In the current value change, Continuous path control cannot be set.)
• Current value change cannot be set in [Da.2] Control method in the positioning data when Continuous path control is set in
[Da.1] Operation pattern of the previous positioning data. (For example, if the operation pattern of the positioning data No.1
is Continuous path control, Current value change cannot be set to the positioning data No.2.) If this setting is configured,
New current value not possible (Error code: 1A1DH) occurs and the deceleration stop is performed.
• When degree is set in [Pr.1] Unit setting and the value set in [Da.6] Positioning address/movement amount is out of the
setting range (0 to 359.99999 [degree]), Outside new current value range (Error code: 1997H) occurs and the operation will
not start.
• If the value set in [Da.6] Positioning address/movement amount is out of the setting range of the software stroke limit
([Pr.12], [Pr.13]), Software stroke limit (+) (Error code: 1A18H) or Software stroke limit (-) (Error code: 1A1AH) occurs and
the operation will not start.
50000
OFF
ON
0 Md.20
Positioning start signal
[Y10, Y11, Y12, Y13]
Current feed value
The current feed value changes to the positioning
address specified in the positioning data
of the current value change.
The above figure shows an example
of when the positioning address is 0.