MODIFY-MEASUREMENT-PERIODS Modify SM2 monitoring cycle

This statement is used to modify the SM2 time periods which control the cyclical acquisition of SM2 monitored data.

Format

MODIFY-MEASUREMENT-PERIODS                                                                                                           

OFFLINE-PERIOD = *UNCHANGED / <integer 10..3600>

,ONLINE-PERIOD = *UNCHANGED / *SAME-AS-OFFLINE / <integer 10..3600>

,SAMPLING-PERIOD = *UNCHANGED / <integer 200..10000>

Operands

OFFLINE-PERIOD =
Specifies the SM2 monitoring cycle during which monitored data is collected and written to a file.

OFFLINE-PERIOD = *UNCHANGED
The monitoring cycle defined here remains unchanged. When the SM2 subsystem is started, this value is set to 150 seconds.

OFFLINE-PERIOD = <integer 10..3600>
Defines the SM2 monitoring cycle in seconds.

ONLINE-PERIOD =
Specifies the SM2 monitoring cycle during which the monitored data is collected for screen output and then displayed. The cycle of the background monitoring operations (namely gathering and writing the monitored data to the SM2 output file) is not changed.

ONLINE-PERIOD = *UNCHANGED
The online cycle remains unchanged. When the SM2 subsystem is started, this value is set to *SAME-AS-OFFLINE (i.e. no separate online cycle is defined).

ONLINE-PERIOD = *SAME-AS-OFFLINE
The online cycle is the same as for background monitoring. This setting is the optimum setting for internal management of data. If the online cycle is not required for a longer period of time, this offline setting is selected.

ONLINE-PERIOD = <integer 10..3600>
Defines an online cycle in seconds.

If the same value is selected for OFFLINE-PERIOD and ONLINE-PERIOD, this is not the equivalent of “ONLINE-PERIOD = *SAME-AS-OFFLINE”. What is does mean is that internally separate buffers are maintained and provided with data. For reasons relating to the system load, such a parameter setting should be avoided.

SAMPLING-PERIOD =
Changes the sampling cycle during which samples are taken of some of the SM2 monitored variables.

SAMPLING-PERIOD = *UNCHANGED
The sampling cycle remains unchanged. When the subsystem is started, this value is set to 800 milliseconds.

SAMPLING-PERIOD = <integer 200..10000>
Defines a sampling cycle in milliseconds. Values which are entered are rounded down to multiples of 100 (milliseconds).