3 telegram structure, Telegram structure, 9parameter data transfer – Lenze E94AYCPM User Manual

Page 60

Advertising
background image

9

Parameter data transfer

9.3

PROFIdrive parameter data channel (DP-V1)

60

Lenze · E94AYCPM communication module (PROFIBUS®) · Communication Manual · DMS 12.0 EN · 11/2012 · TD17

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

9.3.3

Telegram structure

[9-4]

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 used, 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 identification
• 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

0x00

U16

2 bytes

High byte

Low byte

U32

4 bytes

High word

Low word

High byte

Low byte

High byte

Low byte

Advertising