Siemens SIMATIC FM 453 Manual page 313

Servo drive / step drive positioning module
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Sample
The following figure shows a sample program with the programming flow.
Programming
(Standard case)
V
1 – Block N10 is started at the point of deceleration of N5.
2 – N15 is started at the point of deceleration of N10. Acceleration to the
3 – N20 is started at a lower traversing speed at the braking point of N15.
4 – In a change of traversing direction, the axis brakes until it comes to a
5 - When the target range is reached, the axis accelerates in the opposite
To be able to approach a position correctly, the axis must calculate the point
of deceleration. The relevant parameters for this calculation are the residual
traversing distance, the deceleration value and the current traversing speed.
The point of deceleration is also the earliest possible time for a block change.
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
/
N
G1
G2
G3
5
90
64
10
15
20
25
64
N5
N10
N15
1
2
higher traversing speed begins when the set position of N10 is reached.
standstill and waits until the actual value of the encoder has reached the
target range.
direction up to the traversing speed of the new block.
Writing Traversing Programs
X/t
F
M1
M2
10 000
100 00
20 000
30 000
200 00
40 000
150 00
30 000
100 00
N20
N25
3
4
5
M3
D
t
10-17

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