GFK-1911B
Chapter 8 Communications
8-29
8
Format of the Parameter Telegram
This section provides a detailed description of the format of the parameters for the
Profibus NIU and the input and output modules. This may be useful when setting
parameters using acyclic services or if there is no interface for the simple selection
of parameters. One possible application is changing the parameters of failsafe
values during operation.
Parameterization in data exchange mode is not permitted for the configuration
data (measuring range, sensor type, etc.).
The data for the configuration and the failsafe value can be found in the module
datasheets.
NIU Parameters
Bytes 1 to 7
DP standard
Bytes 8 to 10
DP/V1 standard
Control byte
Bit 7, Bit 6
0
Reserved
Bit 5
0
DXCH only for Global Control OPERATE
1
DXCH without Global Control OPERATE
Bit 4
0
Do not rotate DI 16 and DO 16 data
1
Rotate DI 16 and DO 16 data
Bits 3 to 2
00
Status PDU
01
ID-specific module diagnostics
10
Old
diagnostics
Bit 1
0
Automatic error acknowledgment
1
Must be acknowledged via acyclic channel
Bit 0
0
No stop on error
Byte 11
1
Stop on error
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