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Messages and Diagnostics
The following message paths are possible:
•
Message buffer output to the SIWATOOL FTA commissioning program
•
Output through the SIWA_FTA function block to its message outputs
•
Diagnostics alarms in SIMATIC CPU with OB82 evaluation
•
Process alarms in the SIMATIC CPU with evaluation in the process alarm
OBs.
7.3 Recognising messages using SIWATOOL FTA
A message buffer is integrated in the module and holds up to 99 entries. If the
number of messages in the message buffer reaches 99 then a new message will
immediately delete the oldest message. The message buffer can be read at any
time with SIWATOOL FTA (menu point "Read all data records") and can be saved
together with the scale parameters. This helps in recognising, analysing and
solving problems in the system.
7.4 Recognising messages using the FB SIWA_FTA
All of the messages of the SIWAREX module can be recognised and processed in
the controller using the FB SIWA_FTA. Additional errors in the processing of the
FB SWIA_FTA are put out through the FB_ERR output variable (see chapter
8 Programming in SIMATIC STEP
7.5 Recognising messages using the diagnostic alarms in the
SIMATIC-CPU
Operating messages (hardware faults) are recognised in the SIMATIC CPU with
diagnostic alarms. For more information, see chapter
STEP
7.
Recognising messages with process alarms.
Process alarms enable the user to respond flexibly to technology messages or to
the corresponding status information. For more information, see chapter
8 Programming in SIMATIC STEP
7-138
7).
8 Programming in SIMATIC
7.
SIWAREX FTA
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