Dp Address Areas Of The Cpus - Siemens CPU 313C Hardware And Installation Manual

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Table 9-7

DP address areas of the CPUs

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DP address area
for I/O
Number of those in the I/O
process image
'3 GLDJQRVWLF DGGUHVVHV occupy 1 byte per DP master and DP slave in the input
address area. For example, at these addresses DP standard diagnostics can be
called for the relevant node (LADDR parameter of SFC 13). The DP diagnostic
addresses are specified in your configuration. If you do not specify any DP
diagnostic addresses, 67(3  assigns these DP diagnostic addresses, starting at
the highest byte address downwards .
In the case of a CPU 31xC-2 DP or CPU 31x-2 DP assigned as a master, two
different diagnostic addresses must be assigned for S7 slaves.
• Diagnostic address of the slave (address for slot 0)
At this address all slave events are reported in the DP master (station
representative), e.g. station failure.
• Diagnostic address of the module (address for slot 2)
At this address all module (e.g. CPU 313C-2 DP as I-Slave) events are reported
in the master (OB82). With a CPU as DP-Slave, for example, diagnostic
interrupts for operating mode transitions are reported at this address.
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• The PROFIBUS subnet has been configured.
• The DP slaves are ready for operation (see relevant DP slave manual).
• If the MPI/DP interface is a DP interface, you must configure the interface as a
DP interface (CPU 317-2 DP only).
• You must configure the CPU as DP master prior to commissioning. That is, in
67(3  you must:
configure the CPU as a DP master,
–
assign a PROFIBUS address to the CPU,
–
assign a master diagnostic address to the CPU,
–
integrate the DP slaves into the DP master system.
–
S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
A5E00105492-03
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1024 bytes
Bytes 0 to 127
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2048 bytes 8192 bytes
Bytes 0 to 127 Bytes 0 to 255
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