3 telegram structure, Telegram structure, Communication manual 8400 protec profibus – Lenze E84Dxxxx User Manual

Page 48

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EDS84DPBUS EN 2.0 - 09/2010

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48

Communication manual 8400 protec PROFIBUS

Parameter data transfer

DP-V1 parameter data channel (PROFIdrive profile)

8.3.3

Telegram structure

[8-4]

PROFIBUS data telegram

The data unit (DU) contains the DP-V1 header and the parameter request or the parameter

response.
The following subchapters describe the parameter request and the parameter response in

detail.

Assignment of the user data depending on the data type
Depending on the data type, the user data are assigned as follows:

E82ZAFP015

SD

LE

LEr

SD

DA

SA

FCS

ED

FC

DSAP

SSAP

DU

Note!

The DP-V1 header consists of:
• function identifier
• slot number
• data set
• length of the user data
Please refer to the corresponding PROFIBUS specification for further information

on the DP-V1 header.

Data type

Length

User data assignment

Byte 1

Byte 2

Byte 3

Byte 4

Byte ...

String

x bytes

U8

1 byte

00

U16

2 bytes

High byte

Low byte

U32

4 bytes

High word

Low word

High byte

Low byte

High byte

Low byte

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