Position-Speed Switching Control - Mitsubishi Electric MELSEC iQ-F Series FX5 User Manual

Position-speed switching control

In Position-speed switching signal ([Da.2] Control method = Forward run speed-position, Reverse run speed-position), the
positioning control for the amount set in [Da.6] Positioning address/movement amount is implemented in the axis direction set
to the positioning data before Position-speed switching signal is input. If Position-speed switching signal is input before the
positioning is completed, pulses are continuously output at the speed set in [Da.8] Command speed until a stop command is
input.
The position-speed switching control has two control types including Forward run position-speed performed in the forward run
direction and Reverse run position-speed performed in the reverse run direction.
Switching from the position control to speed control
• Select a method to switch from the speed control to position control setting the value of [Cd.45] Speed-position switching
device selection.
Setting item
[Cd.45] Speed-position switching
device selection
• To switch the position control to the speed control, [Cd.26] Position-speed switching enable flag must be turned on and
positioning data must be set. (When [Cd.26] Position-speed switching enable flag is turned ON after Position-speed
switching signal is turned ON, the position control is not switched to the speed control. Switches when the position-speed
switching signal turns from OFF→ON again. If [Cd.26] Position-speed switching enable flag and Position-speed switching
signal are turned ON at the start, only the speed control is implemented.)
Setting item
[Cd.26] Position-speed switching
enable flag
• The control decelerates and stops when Position-speed switching signal is not input until the positioning target moves for
the movement amount specified in the position control. When Position-speed switching signal is input during the automatic
deceleration in the position control, the speed is accelerated again to the command speed the speed control continues.
Setting Setting details
value
0, 1, 2 Select the device used for speed /position switching.
• 0: Use External command signal
• 1: Use Near-point dog signal
• 2: Use "[Cd.46] Speed-position switching command"
Setting Setting details
value
0, 1 Set whether to enable or disable Position-speed
switching signal.
• 0: Position control is not switched to speed control
even when Position-speed switching signal is turned
ON.
• 1: Position control is switched to Speed control when
Position-speed switching signal is turned ON.
Buffer memory address
Axis 1 Axis 2
1566 1666
Buffer memory address
Axis 1 Axis 2
1532 1632
9 MAJOR POSITIONING CONTROL
9.2 Positioning Data Settings
9
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