6 - 7
6 DRIVE MODULE
(7) Virtual servomotor axis infinite operation
By setting the upper stroke limit value and lower stroke limit value of the virtual
servomotor parameters such that the "upper stroke limit value = lower stroke limit
value", the stroke limit becomes invalid and infinite operation becomes possible.
When the stroke limit is invalid, it is also possible for the start of the feed current
value to take place in a direction that exceeds 32 bits. In this case, the feed
current value is converted to a 32 bits ring address.
-2147483648......2147483647
The following operations are possible by the control mode.
Control mode
Control contents
Positioning (Linear)
Speed-switching
Constant-speed (Linear)
• When the ABS command is used for the start, it starts in a
direction within the 32 bits range. It does not start in a
direction that exceeds the 32 bits range.
• When the INC command is used for the start, it starts in
the specified direction, so it also can be start in a direction
that exceeds 32 bits.
Fixed-pitch feed
• It starts in the specified direction, it also can be start in a
direction that exceeds 32 bits.
Position follow-up
• The command address is controlled by the absolute
method so it does not start in a direction that exceeds the
32 bits range.
Speed
JOG
Manual pulse generator
(Test mode)
• Stroke is invalid. (It is ignored.) Moves in the specified
direction.
Positioning (Circular, Helical)
Constant-speed (Circular, Helical)
• A start error (107, 108, 109) accompanies the ABS, ABH,
INC or INH command and start is not possible.
(8) Reverse return during positioning
By specifying a negative speed and making a speed change request by the
CHGV instruction during the start, allow the axis start deceleration at that point
and return in the opposite direction upon completion of deceleration.
Refer to the "Q173D(S)CPU/Q172D(S)CPU Motion controller (SV13/SV22)
Programming Manual (Motion SFC)" for details.
(9) Target position change
QDS
Making a target position change request by the CHGP instruction during the
start.
Refer to the "Q173D(S)CPU/Q172D(S)CPU Motion controller (SV13/SV22)
Programming Manual (Motion SFC)" for details.
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