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PD-01 PROFIBUS-DP Module
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19
Request Response
Word 1 (PKE) 17A0 Word 1 (PKE) 17A0
Word 2 (IND) 7000 Word 2 (IND) 7000
Word 3 (PWE1) 0000 Word 3 (PWE1) 0000
Word 4 (PWE2) 0000 Word 4 (PWE2) 0300
If PD-01 returns the data 0x0300, it indicates that Scan port is disconnected. Please
refer to Section 6.2 for details.
Example 5: Access error
If take any action using PKW to access parameter in AC Drives and it fails, PD-01 will
response error information. Suppose that Master send data sequence is 202D 8000
0000 0002, if VFD series Drives does not find this address (0x07FD), it will respond
the data sequence 702D 8000 0000 0000, response ID is 7 which means cannot
process request (with error number), and error number is 0 (Illegal Parameter
Number).
Request Response
Word 1 (PKE) 202D Word 1 (PKE) 702D
Word 2 (IND) 8000 Word 2 (IND) 8000
Word 3 (PWE1) 0000 Word 3 (PWE1) 0000
Word 4 (PWE2) 0002 Word 4 (PWE2) 0000
Response time about PD-01
The update time via PROFIBUS connection can be divided in 3 parts:
T1: Communication time in transmit data from the master to PD-01, and
T2: Wait processing in data buffer of PD-01, and
T3: Communication time in transmit data from PD-01 to VFD Drives.
T1 T3
Master
Data Buffer
Timer
PD-01
VFD
series
Drives
T2