9 parameter data transfer, Parameter data transfer, Establishing a connection between master and slave – Lenze E84DGFCT User Manual
Page 43: Communication manual 8400 motec ethercat, 9parameter data transfer
EDS84DMOTECAT EN 2.1 - 11/2012
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Communication manual 8400 motec EtherCAT®
Parameter data transfer
Establishing a connection between master and slave
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 the access to
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