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IM 34M6H55-02E
1st Edition : Apr 1, 2002-00
7.2.11 Changing Speed during Operation
When the Change Speed command is issued during a positioning operation, the axis
immediately starts to accelerate (or decelerate) to the new speed at a rate determined
by the new speed and the new acceleration (or deceleration) time. When the axis
subsequently decelerates from the new speed and stops to complete the positioning
operation, or when a Decelerate-and-Stop command is issued, the deceleration rate is
determined by the new speed and the deceleration time.
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Conditions for Command Execution:
- The axis is not in an error state.
- The axis is not in the End-of-Positioning status.
- The axis is not in an origin search operation.
- The axis is not accelerating during a positioning operation.
- The axis is not decelerating during a positioning operation or in the jog stepping
operation.
- The axis is not changing its speed during a positioning operation.
- The axis can reach the target position even after changing to the new speed.
- The axis is not changing its target position.
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Note:
- If any of the conditions is not satisfied, the command is ignored and the Command
Execution ACK relay is not set. If the command is issued but not all the conditions
are satisfied, an alarm code is set in the alarm status. The alarm code is
automatically cleared when the Execute Command output relay is reset. For details
on alarm codes, see Section 8.3, “Alarm Codes.”
- If the Change Speed command is issued during a jog stepping operation, the
module waits until all acceleration and deceleration has been completed before
executing the command. If a new Change Speed command is issued during the
wait, the previous command is discarded and only the new command is executed.
- If there is an invalid command parameter, an error occurs and the axis stops
immediately.
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Procedure:
1. Write the command parameters to the positioning module with the OUTPUT
instruction (set the command code to 6).
2. Set the Execute Command output relay.
3. The Execute Command ACK input relay is set and the Change Speed operation
begins. Reset the Execute Command output relay after confirming that the Execute
Command ACK input relay is set. If there is an invalid parameter, the Error
Notification input relay will be set, but the Execute Command ACK input relay will
not be set.
4. Confirm that the Execute Command ACK input relay is reset.
Summary of Contents for F3YP14-0N
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Page 60: ...7 5 IM 34M6H55 02E 1st Edition Apr 1 2002 00 Figure 7 2 Set Parameter Program ...
Page 65: ...7 10 IM 34M6H55 02E 1st Edition Apr 1 2002 00 Figure 7 6 Jog Stepping Program ...
Page 69: ...7 14 IM 34M6H55 02E 1st Edition Apr 1 2002 00 Figure 7 9 Origin Search Program ...
Page 77: ...7 22 IM 34M6H55 02E 1st Edition Apr 1 2002 00 Figure 7 15 Positioning Operation Program ...
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