Siemens SM2 monitoring system User Manual

U3585-J-Z125-8-76

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SM2 monitoring program

Depending on the mode of monitored-data acquisition (frequency, scope), we must
consider two different applications:

●

Trend monitoring (= long-term monitoring) for obtaining data for system capacity
planning

●

Bottleneck analysis for locating and eliminating performance problems

The utilization data of the following resources is required in order to carry out long-term
system capacity planning:

–

CPUs

–

–

devices

–

Additional monitoring routines need not be activated.

It is advisable to use the following settings for monitoring periods:

The monitoring period should cover the entire period from SYSTEM READY through to
SHUTDOWN. If output of the online screen report takes too long during the session, you
can shorten the online monitoring cycle.
Monitoring times are set using the MODIFY-MEASUREMENT-PERIODS statement.

It is a good idea to create a new SM2 output file every day (OPEN-LOG-FILE / CLOSE-
LOG-FILE statements). The SM2U1 routine can be used to combine (and split) daily SM2
output files to create one large file, known as the master SM2 output file. The daily SM2
output files must be added to the master SM2 output file in chronological order.

Sampling cycle (SAMPLING-PERIOD):

1000 milliseconds

Monitoring cycle (OFFLINE-PERIOD):

5 minutes

Analysis subinterval

1 hour