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S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
A5E00105492-03
11-13
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With CPU 31x-2 you assign diagnostic addresses for the PROFIBUS DP. Make DP
diagnostic addresses are assigned to the DP master and to the DP slave sure
during configuration.
CPU as DP master
CPU as DP slave
During configuration you must specify three diagnostic addresses:
PROFIBUS DP
DP interface diagnostic address
(from the slave)
• Slave diagnostic address
(from the master)
• Slot 2 Diagnostic Address
of the Slave (from the master)
Figure 11-3 Diagnostic addresses for DP masters and DP slaves
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During configuration of the DP master, you
assign two different diagnostic addresses for
an I-slave: one diagnostic address for Slot 0
and one diagnostic address for Slot 2. The
two addresses have the following functions:
• The diagnostic address for slot 0 reports
in the master all events relating to the
complete slave (station representative),
e.g. station failure.
• The diagnostic address for slot 2 is used
to report events that affect this slot. For
example, if the CPU is acting as an
intelligent slave, it returns the diagnostic
interrupts for operating state transitions.
Hereinafter, these diagnostic addresses are
referred to as DVVLJQHGWRWKH'3PDVWHU.
These diagnostic addresses are used by the
DP master to obtain information on the
status of the DP slave or a bus interruption.
During configuration of the DP slave, you
also specify a diagnostic address assigned
to the DP slave (in the associated project of
the DP slave).
Hereinafter, this diagnostic address is
referred to as DVVLJQHGWRWKH'3VODYH.
This diagnostic addresses is used by the DP
slave to obtain information on the status of
the DP master or a bus interruption.
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