Delta PROFIBUS-DP Module for VFD Series Drives PD-01 User Manual download pdf (Page 20)

PD-01 PROFIBUS-DP Module

Examples for PKW mechanism

Example 1: Read data of parameter P0003

To read value of P0003, set the request ID to 1 (request parameter value - word).

Because P0003 is less than 2000, the Para Page Select is 0, thus, the data sequence

are as follows:

Master  PD-01 : 1003 0000 0000 0000 request value of P0003

PD-01  Master : 1003 0000 0000 1770

Request Response

Word 1 (PKE) 1003

Word 2 (IND) 0000

Word 3 (PWE1) 0000

Word 4 (PWE2) 0000

Word 4 (PWE2) 1770

PD-01 responds the value of P0003. All parameters in VFD series Drives are 16-bit

value, so the value is transferred in PWE2 (4th word). The value of P0003 is 0x1770

(6000 decimal), in VFD-M series Drives, it is “Maximum Output Frequency”.

Example 2: Read command frequency in VFD series Drives (0x2102)

To read value of command frequency, set the request ID to1, we should set the Para

Page Select because the parameter address is greater than 2000. The address

0x2102 is 8450 in decimal, if set Page Select to 4, then the Basic PNU is 8450 –

4*2000 = 450 (0x1c2), thus, the data sequence are as follows:

Master  PD-01 : 11C2 2000 0000 0000 request value of address

0x2102

PD-01  Master : 11C2 2000 0000 0868

Request Response

Word 1 (PKE) 11C2 Word 1 (PKE) 11C2

Word 2 (IND) 2000 Word 2 (IND) 2000

Word 3 (PWE1) 0000 Word 3 (PWE1) 0000

Word 4 (PWE2) 0000 Word 4 (PWE2) 0868

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Delta PROFIBUS-DP Module for VFD Series Drives PD-01 User Manual Page 20