Lenze EMF2133IB - Page 98

Parameter data transfer
PROFIdrive parameter data channel
PROFIdrive DP−V1
8
l
98
EDSMF2133IB EN 5.0
8.3.1.2 Acyclic data transfer
) Note!
A parameter request refers to one or several parameter(s) (multi−parameter
request).
Master
DP−V1 Slave
Parameter request Parameter request
Parameter
processing
Parameter
response
Parameter
response
Write.req
with data (parameter request)
Write.res
without data
Read.req
without data
Read.res(−)
without data
Read.req
without data
Read.res (+)
with data (parameter
response)
Sequence:
ƒ A "Write.req" is used to pass the data set (DB47) to the slave in the form of a
parameter request.
ƒ With "Write.res" the master receives the confirmation for the receipt of the
message.
ƒ The master requests the response of the slave with "Read.req".
ƒ The slave responds with "Read.res (−)" if processing has not yet been completed.
ƒ After parameter processing, the parameter request is completed by transmitting the
parameter response to the master with "Read.res (+)".