Siemens SIMATIC FM 453, Manual

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10-17
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
The following figure shows a sample program with the programming flow.
/ N G1 G2 G3 X/t F M1 M2 M3 D
100 00 10 000
10
90 64 5
15
20
25 64
20 000
30 000
40 000
30 000
200 00
150 00
100 00
t
V
N5 N10 N15 N20 N25
1
2
3
4
5
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
higher traversing speed begins when the set position of N10 is reached.
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
standstill and waits until the actual value of the encoder has reached the
target range.
5 - When the target range is reached, the axis accelerates in the opposite
direction up to the traversing speed of the new block.
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.
Sample
Programming
(Standard case)
Writing Traversing Programs