Siemens SIMODRIVE POSMO A User Manual page 158

02.99 04.01
Setting actual The SIMODRIVE POSMO A positioning motor can be referenced at a
value by writing specific axis position by writing the required actual value into P40 (posi-
into P40
tion actual value).
For a stationary axis, this position is accepted as position actual value,
and after this, SIMODRIVE POSMO A is considered to have been ref-
erenced.
S
S
Note
For "set actual value", the same conditions must exist as when
referencing, i.e. the drive must be closed–loop controlled and be
stationary.
Setting the The reference position can be set to a zero mark using the traversing
referencing block as shown in the following program example.
position to the
Example:
zero mark using
S
the traversing
block
(from SW 1.4)
S
S
S
S
S
For this traversing block, the axis traverses through 100 mm relative. At
the end of the block, the setting value for the reference position is read
from "MeldPos", in order to correct the distance moved since the last
zero mark. The axis is then referenced.
This function corresponds to referencing an axis with reference cams
(refer to Table 5-7).
Setting the actual The actual value can be set via a traversing block as shown in the
value using the above program example.
traversing block
At the end of the block, the position, saved in "MeldPos" becomes the
(before SW 1.4)
new actual position of the drive.
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SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
Move, e.g. using "jogging" to the required axis position.
Reference the positioning motor by writing the actual value, valid for
this axis position, into P40 (position actual value).
Program control word (PSW) = 515
Bit 9 = 1 ––> set reference position
Bit 1 = 1 ––> relative
Bit 0 = 1 ––> enter position and velocity (closed–loop pos. contr.)
Target position = 100.0 mm
Speed = 100 %
Acceleration = 100 %
Time = 0 ms
MeldPos = 50.0
5 Description of the Functions
5.5 SIMODRIVE POSMO A functions
(10 0000 0011
dec bin
P80:x
P81:x
P82:x
P83:x
P84:x
P85:x
)
5-157
5