Element command precedence

Individual element commands can be grouped and scheduled to allow you to schedule a command or group of commands to be issued at a particular time (for example, day shift, night shift). Individual element commands always override group or schedule commands.

For example, ARCBSDS is set to 900 with a SET command and has been set to 800 as part of a command group. Despite the chronological order of the SET commands, the value of ARCBSDS is 900 because the individual SET command overrides the command group.

If you change an element’s value and then issue a RESET command for that element, OPERTUNE returns the element to its group value. If the element was not set in any group, then OPERTUNE resets it to its original ZPARM value.

The following figures show the effects of group and individual SET and RESET commands. Despite the order of the two SET commands, the value of ARCBSDS is 900 when the first RESET is issued.

The following figure shows that if you reset the group first, the value of ARCBSDS remains unchanged, because the individual element SET overrides the group setting:

The following figure shows the effects of resetting the element first. ARCBSDS is returned to its group value of 800. When the group is then reset, ARCBSDS returns to its ZPARM value.