Diagnostics Using the User Program
10-5
DP/PA Link and Y Link Bus Couplings
A5E00193841-011
Table 10-3 Structure of station status 1, continued
Bit Cause/remedyMeaning
5 1: The DP master cannot interpret the
response from the IM 157.
Check the bus configuration.
6 1: The configured station type does not
correspond to the IM 157.
Is the correct station type entered in
the configuration software?
7 1: The parameters have been assigned
to the IM 157 by a different DP ma-
ster (not by the DP master that cur-
rently has access to the IM 157).
The bit is always set to 1 when, for
instance, you are accessing the
IM 157 using the programming
device or another DP master.
The PROFIBUS address of the DP
master that parameterized the
IM 157 is contained in the “master
PROFIBUS address” diagnostic
byte.
Table 10-4 Structure of station status 2
Bit
Meaning
0 1: Parameters have to be reassigned to the IM 157.
1 0: This bit is always set to “0”.
2 1: This bit is always set to “1” when the IM 157 with this PROFIBUS address is
present.
3 1: The response monitor has been enabled for the IM 157.
4 0: This bit is always set to “0”.
5 0: This bit is always set to “0”.
6 0: This bit is always set to “0”.
7 1: The IM 157 is disabled, i.e. it has been removed from current processing.
Table 10-5 Structure of station status 3
Bit
Meaning
0 to 7 0: These bits are always set to “0”.
Master PROFIBUS address
Byte 3 of the standard diagnosis contains the PROFIBUS address of the DP
master that parameterized the IM 157 and that has read and write access to the
IM 157.
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