8.2.1.4 Infinite driving job when using indexing table function
In the case of infinite driving jobs the drive moves at constant speed, regardless of a
transmitted target position, until the mode is deactivated or is overwritten by a new
driving job. On switching to the next driving set (absolute or relative), the new target
position is approached in the current direction of movement. A preset path
optimization is ignored when the indexing table is active.
8.2.1.5 Relative driving job when using indexing table function
Relative driving jobs may relate to the current target position or to the actual position.
For more information see "Field Buses" user manuals.
In the case of relative driving jobs greater travel distances than the circumferential
length are possible.
Example without gear ratio:
Circumferential length = 360°
Relative target position = 800°
Start position = 0°
Movement:
The drive will complete two motor revolutions (720°) and stop at the 3rd
revolution at 80° (800° - 720°).
8.2.2 SERCOS
When using the SERCOS profile, scaling of the units is termed weighting. The
weighting describes the physical unit and the exponent with which the numerical
values of the parameters exchanged between the master control system and the
drives are to be interpreted. The weighting method is defined by the parameters for
position, speed, force / torque and acceleration weighting.
MOOG
ID
No.:
CB40859-001
Date:
02/2018
MSD Servo Drive - Device Help
168
8 Motion profile
Fig. 8.10: Dialog box for scaling via SERCOS
ID
Index Name
Unit
Description
163
0
MPRO_FG_Config
Factor group configuration
10043
0
COM_SER_
PolaritySpeed
Speed polarity parameter
10044
0
COM_SER_
ScaleTypSpeed
Velocity data scaling type
10045
0
COM_SER_
ScaleFactorSpeed
Velocity data scaling factor
10046
0
COM_SER_
ScaleExpSpeed
Velocity data scaling exponent
10055
0
COM_SER_PolarityPos
Position polarity parameter
10076
0
COM_SER_
ScaleTypPos
Position data scaling type
10077
0
COM_SER_
ScaleFactorPos
Linear position data scaling factor
10078
0
COM_SER_
ScaleExpPos
Linear position data scaling exponent
10085
0
COM_SER_
Torque polarity parameter
Table 8.5: “Standardization / units - SERCOS” parameters
