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01.99
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Positioning
The positioning monitoring can be used to identify when the target posi-
monitoring
tion is precisely approached.
Mode of operation
In order to ensure that an axis is positioned within a specific time, after
a motion block has been completed (partial position reference value =
0, 8 time t
started.
After this time has expired, it is checked once as to whether the posi-
tion actual value lies within the positioning window (P0321).
Position
value
x
Target position
Position
reference
value
1 signal
Setpoint static
0 signal
1 signal
Reference position reached
0 signal
Fig. 6-18 Positioning monitoring
Table 6-29
Output signals
The following output signals are available
(description, refer under the index entry "Output signal..."):
S
S
E Siemens AG 2005 All Rights Reserved
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
6.2
Positioning mode (P0700 = 3, from SW 2.1)
in Fig. 6-18) the positioning monitoring time (P0320) is
1
Positioning window P0321
Position
actual
value
a
b
c
t
t
t
1
2
Explanation of curves a, b and c
Curve
a
After the target position has been reached in t
starts the positioning monitoring time.
b
From time t
the position actual value is within the positioning win-
2
dow. Positioning is considered as having been completed.
c
After the positioning monitoring time has expired in t
actual value lies outside the positioning window. This results in an
error.
Output signal, "setpoint static"
Output signal, "reference position reached"
6 Description of the Functions
Fault
Positioning monitoring time
P0320
3
Description
1
t
the interpolator
, the position
3
6-385
6
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