Mitsubishi Electric MELSEC iQ-R RD75P4, User Manual

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12 DATA USED FOR POSITIONING CONTROL
12.7 Monitor Data
453
12
Axis monitor data
[Md.20] Current feed value
This area stores the currently commanded address or the address of the current position. The stored value is different from
the actual motor position during operation. Multiplying the stored value by the following converted value enables the
monitoring of the converted value in each unit.
• When the unit is degree, the address is a ring address of values between 0 and 359.99999

.
• The update cycle of this area is 0.88ms.
• When the machine OPR is completed, the OP address is stored.
• When the current value is changed with the current value change function, the changed value is stored.
■
Buffer memory address
The following table shows the buffer memory address of this area.
[Md.21] Machine feed value
This area stores the address of the current position according to the machine coordinate (coordinate specified with the
machine). The stored value is different from the actual motor position during operation. Multiplying the stored value by the
following converted value enables the monitoring of the converted value in each unit.
• The update cycle of this area is 0.88ms.
• Under the speed control, the machine feed value is constantly updated regardless of the parameter setting.
• The value is not cleared to 0 at the beginning of fixed-feed.
■
Buffer memory address
The following table shows the buffer memory address of this area.
Unit Converted value

m

10
-1
inch

10
-5
degree

10
-5
pulse

1
Buffer memory name Axis 1 Axis 2 Axis 3 Axis 4
[Md.20] Current feed value 800 900 1000 1100
801 901 1001 1101
Unit Converted value

m

10
-1
inch

10
-5
degree

10
-5
pulse

1
Buffer memory name Axis 1 Axis 2 Axis 3 Axis 4
[Md.21] Machine feed value 802 902 1002 1102
803 903 1003 1103