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PD-01 PROFIBUS-DP Module
DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED
15
NOTE:
Table above is for reference only, please check VFD series Drives user manual for
details. PD-01 will get the status word from VFD series Drives, so the bit assignments in
the user manual of VFD series Drives is valid.
Accessing parameters via PKW area
In cyclical data, PD-01 can provide request and response (read / write) message to
access the parameters of VFD series Drives. Due to the request and response
mechanism, the master must send the request until it receives a corresponding
response.
PKW have at least 4 words:
Word 1 Parameter ID (PKE)
15 12
AK
11
SPM
10 0
Parameter number (PNU)
Word 2 Parameter sub-index (IND)
15 8 7 0
Word 3 PWE1 reserved in PD-01
Word 4 PWE2 parameter value of read/write
PKE
Bits 0 to 10 (PNU) contain the number of the relevant parameter.
Bit 11 is reserved.
Bits 12 to 15 (AK) contain the request or the response identifier.
Request identifier (master PD-01)
Request Identifier Meaning
0 No request
1 Request parameter value
2 Modify parameter value (word)
Response identifier (PD-01 master)
Response Identifier Meaning
0 No response
1 Transfer parameter value (word)
7 Cannot process request (with error number)