3 telegram structure, Telegram structure, Communication manual 8400 motec profibus – Lenze E84DGFCP User Manual
Page 54
Communication manual 8400 motec PROFIBUS
Parameter data transfer
PROFIdrive parameter data channel (DP-V1)
54
L
EDS84DMOTPBUS EN 3.0 - 11/2011
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
00
U16
2 bytes
High byte
Low byte
U32
4 bytes
High word
Low word
High byte
Low byte
High byte
Low byte