Balluff BTL5-T110 Technische Beschreibung Seite 70

BTL5-T110...
Configuration and Profibus Connection –
Transducer Class 3/4
6 Startup (cont.)
Code Name
0x40 DPV1_FORMAT_NULL
0x41 DPV1_FORMAT_BYTE
0x42 DPV1_FORMAT_WORD
0x43 DPV1_FORMATDWORD
Table 6-4: DP- V1 data formats (Write.req)
Byte
Data type
number
0 Unsigned8
1 Unsigned8
2 Unsigned8
3 Unsigned8
4 Unsigned8
5 Unsigned8
6 - 7 Unsigned16
Table 6-5: Structure of the DU in Write.req for I&M (Index 255)
The slave replies to the request with a Write.res. In this message the addressed Slot and Index as well as the data
length are returned.
Byte 0 Byte 1 Byte 2
SD LE LEr
68h X X
Table 6-6: Message structure of Write.res
Meaning
This is a datum with a length of 0 bytes
This is a datum with a length of 1 byte
This is a datum with a length of 2 bytes
This is a datum with a length of 4 bytes
Meaning Description
Each service is
Function Num assigned exactly
one function code.
Slot
Index
Number of values
Length
to be transmitted.
Reserved
Reserved
Parameter number,
Parameter
see 7.3 Acyclic
number
data
Byte 3 Byte 4 Byte 5
SD DA
68h 8xh 8xh
Value
0x5F = Write
0x00
255 I&M
parameter
channel
0x04
0x08
0x00
0xFDE8 = I&M
Parameter 65000
Byte 6 Byte 7
SA FC DSAP
X 33h
Byte 8 Byte 9..n-2 Byte n-1
SSAP DU FCS
see
Tab. 6-7:
DU
33h X
structure
of a
Write.res
english
Byte n
ED
16h
23