Siemens SIMOTION Function Manual page 102

Cam Track TO - Part II
4.3 Configuring the TO Cam Track
You can set the following parameters:
Table 4-10 Cam track configuration data
Field/button
Name
Output cam type
(See Chapter Output cam
types of the single output
cams on a track)
Processing cycle clock
Type of output cam value
102
Meaning/information
The name of the created cam track is displayed here.
Choose the type of output cam used on the track in Output cam type.
Position-based cam
(default value)
The switching signal is active when the position of the axis lies between two markers (start and
end position).
Time-based cam
The switching signal is on for a specific period of time after reaching the switching position (start
position).
Time-based cam with maximum ON length
A maximum ON length can also be defined for time-based cams. This means that the time-based
cam is deactivated once it has covered the maximum length, even though the parameterized
time has not yet expired.
Choose Processing cycle clock to select the system cycle clock used to update the output cam
signal at the output or in the system variables.
The cam calculations are performed in IPO or IPO_2 cycles or in servo cycles. The processing
cycle clock is set in the configuration by means of the OctBaseCfg.taskLevel configuration data.
IPO
(default value)
The output cam signal is updated in the interpolator cycle clock.
IPO_2
The output cam signal is updated in the interpolator cycle clock 2. The IPO_2 cycle clock length
is at least twice that of the IPO.
Servo
The output cam signal is updated in servo cycles.
The following configurations of the processing cycle clock are possible:
● Axis in IPO cycles and output cam in IPO_2 cycles
● Output cam in servo cycles and axis in IPO or IPO_2 cycles
For the possible setting of IPO_fast and Servo_fast with D435-2, D445-2 and D455-2, see
Chapter Second servo cycle clock (Servo_fast) in the SIMOTION Runtime Basic Functions
manual.
Note:
● It is not possible to configure the axis in the servo cycle clock and the output cam in the IPO
or IPO_2 cycle clock.
● It is not possible to configure the axis in the IPO cycle clock and the output cam in the IPO_2
cycle clock if it is a setpoint output cam.
● It is impossible to configure the axis in the IPO_2 cycle clock and the output cam in the IPO
cycle clock.
Note:
When the Servo:IPO ratio is ≠ 1:1, then the greatest possible accuracy for the calculation is
reached for "output cams related to position value" when the servo cycle clock is set as the
processing cycle clock for the cam track TO.
Select the position value that is the reference for the output cam during processing.
Output Cams and Measuring Inputs
Function Manual, 04/2014