Lenze E84AYCET EtherCAT MCI module - Manual (Page 68)

9 Parameter data transfer
9.1 Establishing a connection between master and slave
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Lenze · E84AYCET communication module (EtherCAT) · Communication Manual · DMS 5.0 EN · 05/2013 · TD17
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9 Parameter data transfer
Parameter data are transmitted via the fieldbus as so-called SDOs (Service Data Objects). The SDO
services provide for the write and read access to the object directory.
The SDO channel provides for access to
Implemented CoE objects ( 79) and Lenze codes by means
of the CoE protocol.
In general, the parameter data transfer is not time-critical.
Parameter data are, for instance, operating parameters, motor data, diagnostic information.
9.1 Establishing a connection between master and slave
Basically a master can always request parameter jobs from a slave if the slave is at least in the "Pre-
operational" state.
[9-1] Data communication via the SDO channel
E94AYCET008
Master
read
write
SDO-channel
Slave