Communication via PROFINET IO
5.4 Motion Control with PROFINET
Communication
132 Function Manual, 12/2018, 6SL3097-5BD00-0BP0
Sequence of data transfer to closed-loop control system
1. Actual position value G1_XIST1 is read into the telegram image at time T
IO_Input
before the
start of each clock cycle - and transferred to the controllers in the next cycle.
2. Closed-loop control of the controller starts at time T
CA_Start
after each position controller
cycle and uses the current actual values read previously from the devices.
3. In the next cycle, the controller transfers the calculated setpoints to the telegram image of
the device. The speed setpoint command NSET_B is issued to the closed-loop control
system at time T
IO_Output
after the beginning of the cycle.
Note
With the isochronous telegram setting, the complete SINAMICS device is in clock cycle
synchronism with all data. Reasons:
Between the controller and device, all data are only exchanged in one IRT frame.
In SINAMICS, all data are consistently processed in synchronism.
To Next Page
Loading...
