Siemens SM2 monitoring system User Manual

U3585-J-Z125-8-76

11

SM2 monitoring program

SM2 offers three operating modes:

1. Real-time monitoring (information output to a data display terminal)

2. Background monitoring (information output to a file for subsequent analysis)

3. User-specific task monitoring

The operating modes can be used simultaneously.

When mode 1 is used, SM2 periodically outputs monitored data in the form of reports on
the data terminal. The color version of the 9752 Data Display Terminal is supported. This
data refers to the latest monitoring cycle (e.g. 150 seconds) and can be used as snapshots
for assessing the current system status. Only selected SM2 monitored data is output in this
mode.

When mode 2 is used, the collected data is output in the form records to a file, the SM2
output file. This data can be analyzed later using SM2 products. This mode allows for
selective use of the SM2 operands and is equally suitable for long-term monitoring with a
low system load and for brief special-purpose monitoring with a correspondingly higher
system load.

When mode 3 is used, the nonprivileged user (using the START-TASK-MEASUREMENT
command) can register tasks under his/her own ID for monitoring by SM2. In addition to the
task-specific monitored data, a command counter and SVC task statistics can be
requested. In the case of user-specific task monitoring, all information is written to user-
specific SM2 output files.