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Application Manual POWERLINK Controlled Node
Document no. 5.13013.04
4COMMUNICATION TO THE
b maXX
4000 CONTROLLER
In this chapter the data communication between the POWERLINK Controlled Node and
the b maXX 4000 device is described.
4.1 Communication flow
The POWERLINK Controlled Nodemodule exchanges via a Dual-Port-RAM in the
FPGA data with the b maXX 4000 controller. This data exchange is made with a defined
time pattern via the BACI interface (Baumüller bus).
Therewith the option module activates the communication with the b maXX 4000 control-
ler. During communication, two different types of data are transferred:
m Process data
m Service data
Process data is always transferred cyclically. In the remaining time, service data is trans-
ferred. The transmission of the process data is made in a settable time pattern (Sync in-
terval), transmitting the reference values and the actual values in the SYNC interval each
with different offset. The cycle time of the SoC frame must be in accordance with the BACI
cycle time.