Delta PROFIBUS-DP Module for VFD Series Drives PD-01 User Manual download pdf (Page 22)

PD-01 PROFIBUS-DP Module

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

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 35 36

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Delta PROFIBUS-DP Module for VFD Series Drives PD-01 User Manual Page 22