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Siemens Startdrive V12 SP1 User Manual

Siemens Startdrive V12 SP1
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3 Principle of Operation
3.2 Interaction of motion control instructions and technology objects
SINAMICS G120 as a Speed Axis on the S7-1500
V1.0a, Entry ID: 78788716
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Copyright Siemens AG 2013 All rights reserved
A job is terminated when
it has achieved its objective (e.g., position target or standstill reached or
parameter value read) and the Done output has been set.
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it was replaced by another job. If the Execute input is still set to TRUE, the
CommandAborted output will be set.
an axis error or job error occurs.
In this case, the Error output will be set
All other inputs are used to define the motion. They allow the user to specify,
for example, the target position, max. velocity, acceleration, etc. The value -1.0
means that the default values specified when creating the Axis technology
object are to be used.
3.2.4 Replacement of a job by another job
The replacement of a job is best shown by an example:
An axis receives the job to move at a fixed velocity. (“MC_MoveVelocity”)
It accelerates based on the settings and moves at the specified velocity.
The Busy and InVelocity bits are set.
Now the axis receives the job to stop the motion control job (“MC_Halt”).
On “MC_MoveVelocity”, the Busy output is now deleted and
CommandAborted is set.
On “MC_Halt”, Busy is set.
“MC_MoveVelocity” was replaced by “MC_Halt”.
The axis decelerates based on the settings and comes to a standstill.
On “MC_Halt”, Busy is deleted and Done is set.
The traversing job via “MC_MoveVelocity” was replaced by the halt job via
“MC_Halt” and the halt job completed itself when the axis reached a standstill.
Note
If you want to change the velocity at which the SINAMICS G120 is running,
simply send another job to the axis with the MC_MoveVelocity block.
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Some jobs run endlessly and therefore do not stop themselves. These jobs include, for
example, the enable or (endless) motion at a constant velocity. Therefore, the appropriate
motion control instructions do not have a Done output, but instead have a status output, e.g.
Status or InVelocity.

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Siemens Startdrive V12 SP1 Specifications

General IconGeneral
BrandSiemens
ModelStartdrive V12 SP1
CategoryController
LanguageEnglish

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