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330 PROFINET IO – Communication protocol
DP-V1 read/write request sequence
A read/write service on a drive parameter is illustrated below.
The messaging employs DP-V1 data units. The PROFIdrive
parameter request is included within the DP-V1 request as data.
Likewise, the DP-V1 response contains the PROFIdrive parameter
response as data.
A write request is first sent containing the parameter request. If the
write request is valid, the adapter module acknowledges it with a
DP-V1 write response with no data. The master will then send a
read request. If the adapter module is still busy performing the
internal parameter request, it will return a negative response with
the DP-V1 error code B5h (State conflict). In this case, the master
will repeat the read request until the adapter module has the
PROFIdrive response data ready.
If the write request is invalid, a negative response is returned with
a DP-V1 error code (see section
ErrorCode1
on page
329
).
Master
DP-V1
Slave
Parameter
processing
Parameter request
Parameter response
PROFIdrive
Write request DB47
Write response
without data
Read request DB47
without data
Read response (–)
without data
Read request DB47
without data
Read response
with data
Parameter
PROFIdrive
Parameter
response
request
Summary of Contents for FENA-01
Page 4: ......
Page 20: ...20 Safety instructions ...
Page 32: ...32 Introduction to the manual ...
Page 38: ...38 Overview of the Ethernet network and the FENA 01 11 21 module ...
Page 42: ...42 Mechanical installation ...
Page 46: ...46 Electrical installation ...
Page 48: ......
Page 94: ...94 Modbus TCP Communication profiles ...
Page 106: ...106 Modbus TCP Communication protocol ...
Page 112: ...112 Modbus TCP Diagnostics ...
Page 114: ......
Page 154: ...154 EtherNet IP Start up 3 In the Select Module window select ETHERNET MODULE ...
Page 180: ...180 EtherNet IP Communication profiles ...
Page 246: ......
Page 304: ...304 PROFINET IO Start up ...
Page 374: ...374 AppendixA PROFIdriveparametersandI MrecordsofPROFINETIO ...