Mitsubishi Electric MELSEC iQ-R RD75P4, User Manual

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12 DATA USED FOR POSITIONING CONTROL
12.7 Monitor Data
[Md.27] Current speed
This area stores the value set in [Da.8] Command speed for the positioning data being executed.
• If [Da.8] Command speed is set to -1, this area stores the value in [Da.8] Command speed which is set by the positioning
data used one step earlier.
• If [Da.8] Command speed is set to a value other than -1, this area stores the value in [Da.8] Command speed which is set
by the positioning data being executed.
• If the speed change function is executed, the value set in [Cd.14] New speed value is stored.
Multiplying the stored value by the following converted value enables the monitoring of the converted value in each unit.
■
Buffer memory address
The following table shows the buffer memory address of this area.
[Md.28] Axis feedrate
This area stores the speed which is actually output as a command in each axis at that time. The stored value may be different
from the actual motor speed. Multiplying the stored value by the following converted value enables the monitoring of the
converted value in each unit.
• When the axis is at a stop, 0 is stored.
• The update cycle of this area is 0.88ms.
■
Buffer memory address
The following table shows the buffer memory address of this area.
Unit Converted value
mm/min

10
-2
inch/min

10
-3
degree/min

10
-3
pulse/s

1
Buffer memory name Axis 1 Axis 2 Axis 3 Axis 4
[Md.27] Current speed 810 910 1010 1110
811 911 1011 1111
Unit Converted value
mm/min

10
-2
inch/min

10
-3
degree/min

10
-3
pulse/s

1
Buffer memory name Axis 1 Axis 2 Axis 3 Axis 4
[Md.28] Axis feedrate 812 912 1012 1112
813 913 1013 1113