
FR-A5NP Profibus DP
Communications Option Unit
25
(7) This option unit does not support any other manufacturer-specific mes-
sages/parameters.
5.1. Word 1 (PKE)
NOTE: See appendix C for more information regarding communication co-
ordination.
Bits
Id
Definition
0-10
PNU
Parameter Number (PNU).
Together, the PNU and the IND (word 2 of the Profibus
Profile) define which data word is being accessed.
Section 6 of this manual lists all of the parameters that
you can access.
11
Not used and must be set to 0.
12-15
AK
Task or response Id value.
For task telegrams from the network master to the
slave, i.e. Cmd_Req, the AK can assume the
following values:
0h = no task
1h = request parameter value, read
2h = change parameter value (word), write
3h~Fh = not supported
For task telegrams from the slave to the network
master, i.e. Cmd_Rsp, the AK can assume the
following values:
0h = VFD busy. No data returned by VFD
1h = VFD ready to accept data transmission
2h~6h = not supported
7h = task cannot be executed (error number
placed in PWE, word 4 of the Profibus
Profile)
8h = no operation change rights
9h~Fh = not supported
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