Table of Contents
Advertisement
80 •
Programmable Field Bus Controller 750-833
Configuration
Structure of the length bytes:
Bit
7
0
1
Since the adoption of the DP/V1 specification, it is possible to add data type
information to the process data that is described via the special identification
byte. This is done using the manufacturer specific data.
Structure of the identification:
Octet 1
Bit
7
0
0
1
1
Structure of the length bytes:
Octet 2 / 3
Bit
7
1
6
5
4
3
2
1
0
0
0
0
1
...
...
...
...
...
1
1
1
1
1
0
1
6
5
4
3
2
1
0
0
0
0
0
0
...
...
...
1
1
1
1
1
1
0
0
0
1
0
1
6
5
4
3
2
1
0
0
0
0
1
...
...
...
...
...
1
1
1
1
1
0
Meaning
0
Data length
0
1 byte or word
...
...
1
63 bytes or 63 words
Format
0 = byte structure
1 = word structure
Consistency about
Byte or word
Total length
Meaning
0
Length of the manufacturer specific data
0
0 = no manufacturer specific data
1
...
1 ... 14 = length of the manufacturer specific data
0
1
15 = no manufacturer specific data follows
Input and output
Spec. identification formats
Input and output
unassigned slot
a length byte for inputs follows
a length byte for outputs follows
a length byte each for inputs and outputs follows
Meaning
0
Data length
0
1 byte or word
...
...
1
63 bytes or 63 words
Formats
Byte structure
Consistency about
Total length
WAGO-I/O-SYSTEM 750
Bus System
Advertisement
Table of Contents
