
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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