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Manual – MOVI-PLC® advanced DHF41B DeviceNet and PROFIBUS DP-V1 Fieldbus Interfaces
11
Structure of the DP-V1 parameter channel
Functions of PROFIBUS DP-V1
11.3.2 DP-V1 master processing sequence
If the bus cycles are very short, the request for the parameter response arrives before
the inverter has concluded parameter access in the device. This means that the re-
sponse data from the inverter is not yet available. In this case, the inverter sends a neg-
ative answer with the
Error_Code _1 = 0xB5 (status conflict)
to the DP-V1 level. The
DP-V1 master must then repeat the request with the READ.req header until it receives
a positive answer from the inverter.
53127AEN
Send Write request
with parameter data
Send DS_Read.req
with parameter data
Check Write.
response
Write.response
negative
Write.response
positive
Parameter transfer
aborted with ERROR
Read.
response
status
conflict?
Other error
or timeout
yes
no
yes
no
Parameter transfer ok,
data available
0
0
I
Summary of Contents for DHF41B
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