Lenze PROFIBUS E84AYCPM - Acyclic Data Transfer

9 Parameter data transfer
9.3 PROFIdrive parameter data channel (DP-V1)
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Lenze · E84AYCPM communication module (PROFIBUS®) · Communication Manual · DMS 5.0 EN · 11/2012 · TD17
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9.3.2 Acyclic data transfer
[9-3] Transmission directions
Explanation
• A "Write.req" is used to pass the data set (DB47) to the slave in the form of a parameter request.
• With "Write.res" the master receives the confirmation for the receipt of the message.
• The master requests the response of the slave with "Read.req".
• The slave responds with "Read.res (-)" if processing has not yet been completed.
• After parameter processing, the parameter request is completed by transmitting the parameter
response to the master with "Read.res (+)".
 Note!
A parameter request refers to one or several parameter(s) (multi-parameter request).
E94YCPM011
Master
Slave
DP-V1
Write.res
Write.req
with data (parameter request)
with data (parameter response)
without data
without data
without data
without data
Read.req
Read.res (-)
Read.req
Read.res (+)Parameter response
Parameter request
Parameter request
Parameter
processing
Parameter response