Delta user manual Response time about PD-01, Vfd

PD-01 PROFIBUS-DP Module

Request

Word 1	(PKE)	17A0
Word 2	(IND)	7000
Word 3	(PWE1)	0000
Word 4	(PWE2)	0000

Response

Word 1	(PKE)	17A0
Word 2	(IND)	7000
Word 3	(PWE1)	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

Word 1	(PKE)	202D
Word 2	(IND)	8000
Word 3	(PWE1)	0000
Word 4	(PWE2)	0002

Response

Word 1	(PKE)	702D
Word 2	(IND)	8000
Word 3	(PWE1)	0000
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.

		PD-01			Timer
	T1					T3	VFD
Master			Data Buffer				series
							Drives
				T2

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