Diagnostic Addresses For The Dp Master And Dp Slave - Siemens SIMATIC S7-400 Reference Manual

Structure of a CPU 41x
Diagnostic Addresses in Connection with DP Master Functionality
You assign diagnostic addresses for the PROFIBUS DP in the CPU 41x. Ensure
during configuration that DP diagnostic addresses are assigned once to the DP
master and once to the DP slave.
S7 CPU as DP master
Specify two diagnostic addresses during configuration:
Diagnostic address
During the configuration of the DP
master, you specify (in the associated
project of the DP master) a diagnostic
address for the DP slave. In the
following, this diagnostic address is
described as being assigned to the DP
master.
By means of this diagnostic address the
DP master receives information on the
status of the DP slave or a bus
interruption (see also Table 1-9).
Figure 1-12

Diagnostic Addresses for the DP Master and DP Slave

1-54
S7 CPU as DP slave
PROFIBUS
Diagnostic address
During the configuration of the DP slave,
you also specify (in the associated
project of the DP slave) a diagnostic
address that is assigned to the DP slave.
In the following, this diagnostic address
is described as being assigned to the
DP slave.
By means of this diagnostic address the
DP slave receives information on the
status of the DP master or a bus
interruption (see also Table 1-13).
Automation System S7-400 CPU Specifications
A5E00165965-01