ABB FPBA-01 PROFIBUS DP, Руководство пользователя

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Communication protocol 151
Subsequent response frames:

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 (Function number 5Fh – see page
154 ) is first sent
containing the parameter request.
If the write request is valid, the adapter module acknowledges it
with DP-V1 write response code 5Fh with no data. The master will
then send a read request. If the adapter module is still busy
Resp
D
P
h
ead
er x
x
x
x x
x x
x x
x x
x x
x x
x x
x x
x x
x x
x 0
0 O
B x
x x
x x
x x
x x
x x
x
DP tr
aile
r
PZD3 (Value of drive parameter 1.04)
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