PROFIBUS DP
5.1 CPU 41x-3 PN/DP as DP master / DP slave
S7-400 Automation System, CPU Specifications
Manual, 10/2006, 6ES7498-8AA04-8BA0
5-21
Bit Meaning
6 0:The bit is always set to "0".
7 1:The DP slave is disabled; in other words, it has been removed from cyclic processing.
Table 5-16 Structure of station status 3 (Byte 2)
Bit Meaning
0
to
6
0:The bits are always set to "0".
7 1:
• There are more diagnostic messages than the DP slave can store.
• The DP master cannot enter all the diagnostic messages sent by the DP slave in its
diagnostic buffer.
Master PROFIBUS Address
The master PROFIBUS address diagnostic byte contains the DP address of the DP master
that:
● Assigned parameters to the DP slave and
● has read and write access to the DP slave
Table 5-17 Structure of the master PROFIBUS address (byte 3)
Bit Meaning
DP address of the DP master that configured the DP slave and that has read and write access to the DP
slave.
0 to 7
FF
H
: DP slave has not been assigned parameters by any DP master.
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