Technical Manual PD4-E-M (EtherCAT)
10 Description of the object dictionary
Subindex n contains a bit mask for the respective feedback n. The bits have the following meaning
here:
•
Bit 0: If the bit is set to "1", feedback n is used for position control.
•
Bit 1: If the bit is set to "1", feedback n is used for speed control.
•
Bit 2: If the bit is set to "1", feedback n is used for the commutation in Closed Loop.
Subindex 01
h
always corresponds to the first (and always existing) sensorless feedback.
Which feedback the controller takes into account for the individual controllers (commutation, speed,
position) is implicitly specified by the order of the feedbacks.
The search always begins with feedback 2 and continues in ascending order until all existing product-
specific feedbacks have been queried. If a feedback is found whose parameterization is set, it is
assigned to the corresponding controller and the search ended.
Note
If bit 0 in 3202
h
is set to 0, closed loop is deactivated; bit 2 (commutation) then has no meaning. Bit
1 for the speed and bit 0 for the position in the respective subindicies are still used for the display
of the actual position and speed values.
3204h Feedback Mapping
Function
This object contains information on the existing feedbacks.
Object description
Index
3204
h
Object name
Feedback Mapping
Object Code
ARRAY
Data type
UNSIGNED16
Savable
no
Access
read only
PDO mapping
TX-PDO
Allowed values
Preset value
Firmware version
FIR-v1748-B533384
Change history
Firmware version FIR-v1748-B538662: The number of entries was
changed from 5 to 4.
Value description
Subindex
00
h
Name
Highest Sub-index Supported
Data type
UNSIGNED8
Access
read only
PDO mapping
TX-PDO
Allowed values
Preset value
03
h
Version: 1.0.1 / FIR-v1748
188