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Diagnostics
7-4
SIMATIC 505 PROFIBUS-FMS CP User Manual
7.3 PROFIBUS Statistics
The
PROFIBUS Statistics dialog provides statistical information about the
status of the PROFIBUS communications. T
o view this information, select
the menu command
Diagnostics
PROFIBUS Statistics
.
The
PROFIBUS dialog appears, as shown in Figure 7-3.
Update
OK
PROFIBUS
Statistics
C
ont. Update
Help
Continuous Update Rate (sec):
012345
Receive Frame Errors:
Interface Statistics LA
YER 2:
Bus Statistics:
Bus T
imeouts:
Bus Collisions:
0
0
Electrical Faults:
HSA Exceeded:
0
0
Problem creating LAS:
0
Incorrect Responses:
0
SPC Overflows:
0
Requests:
Confirmed Requests:
271437
271437
Indications: 183281
Reset Counts
Figure 7-3 PROFIBUS
Statistics Dialog Box
Some of the possible PROFIBUS errors are the following:
The bus statistic “HSA Exceeded” refers to Highest Station Address.
The bus statistic “Problem creating LAS” refers to List of Active
Stations.
“SPC Overflows” indicates how many times the memory buffer in the
Siemens PROFIBUS Controller chip has been exceeded.
V
iewing the
PROFIBUS Statistics
PROFIBUS Err
ors
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