Description of the Software Modules and Parameters
Parameter manual
b maXX
BM5800
Document No.: 5.16029.03
209
3
Separated transmission of set values and actual values.
Figure 65:
Separated transmission of set values and actual values.
The actual values in the controller can be transmitted separately from the set values.
However, transmission isn't carried out in the fieldbus task anymore, but at the end of a
controller interrupt. The actual values are immediately transferred by the fieldbus proces-
sor and provided in the EtherCAT buffer. Thus the dead time for the actual values is re-
duced.
Hereby, the timing for the fieldbus transmission must be considered exactly in order to
avoid access conflicts when responding to the actual values on the fieldbus.
Time setting of actual value transfer
Figure 66:
Optional separated transmission of set values and actual values.
The transmission time of the actual values to the fieldbus processor can be determined
in the parameter Fieldbus options (
), separately. Now transmission takes place
at the end of a controller interrupt and not in the fieldbus task anymore. It is possible to
set the controller interrupt carrying out the transmission. Thereby, the controller interrupt
starts to count where the fieldbus task is carried out, too. A setting of 0 controller cycles
means that the actual values are transmitted in the interrupt, where the fieldbus task will
