Inovance SV660, Руководство для продвинутых пользователей

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7 Control Mode
Para. No. Name Description
H19-23
Attribute of position
comparison point 8
Defines the attribute of the 8th comparison point.
0: Skip this point
1: Output DO active signal if current position changes from less than to
more than the comparison point
2: Output DO active signal if current position changes from more than to
less than the comparison point
3: Output DO active signal in both situations
3 Run
1) Description
■
Position comparison switch (H18-00)
When the value of H18-00 changes from 0 to 1, position comparison starts and the value of H18-09
(Present status of position comparison) is updated to the start point of position comparison. When the
value of H18-00 changes to 0, position comparison stops and the present comparison status is cleared.
■
Position comparison resolution (H18-02)
The comparison resolution defines the number of pulses per revolution. Given the maximum and
minimum limits on the target position (defined by group H19), you can reset the resolution when data
overflow occurs on the comparison value. For example: H18-02 = 7-17bit
The maximum value of the target position is 2
31
–
1, and the motor rotates by 2
31
–
1/2
17
circles.
The target position in group H19 is only related to the set resolution.
■
Single comparison mode (H18-03 = 0)
In the single comparison mode, when comparison of the end point is done, the comparison function
is switched off automatically and the present comparison value is cleared to zero. The comparison
function can be enabled again only when the position comparison switch is switched on again.
The real-time position feedback in the single comparison mode is an absolute value, which means
it is an accumulative value based on the preceding comparison point. Such value will not be cleared
automatically.
■
Cyclic comparison mode (H18-03 = 1)
In the cyclic comparison mode, the comparison function will not be switched off when the comparison
of the end point is done, and the present comparison value will be set as the start point for comparison.
Each time the comparison of a certain point is done, the value of H18-10 (Real-time position feedback) is
cleared and re-counted for cyclic comparison.
In the cyclic comparison mode, the target position is a relative and incremental value. Each time the
comparison of a certain point is done, the real-time position feedback is cleared and re-counted to be
compared with the new target point.
■
Position comparison output width (H18-05)
When the position comparison conditions are fulfilled, the servo drive outputs DO active level signal.
The width of the active signal can be set by H18-05 (value range: 1 to 2047 x 0.1 ms).
When the DO output is active, the comparison logic is suspended and no comparison will be performed.
In this case, ensure the operating time between two target points is larger than the DO output width.
■
Target position comparison point
There are eight target position comparison points in total. The comparison point is a 32-bit signed
number. The target position comparison value and the comparison attribute value must be updated to