2 The SM2 monitoring program

2.1 Overview

SM2 is a shareable program that runs under BS2000. It provides the user with information on the status and performance of the system, making it possible to improve the perfor- mance of both the system and its applications. The mode and scope of monitored data acquisition in SM2 can be controlled using commands and statements.

SM2 generates a number of system tasks which are responsible for collecting data and writing it to the SM2 output files.

SM2 consists of privileged and nonprivileged components. Figure 1 shows the exchange of information between the various SM2 tasks.

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Siemens U3585-J-Z125-8-76 1, SM2 monitoring system manual SM2 monitoring program, Overview