Siemens SINUMERIK 840D Operator's Manual page 136

Introduction to Configuring (PSE)
1 Introduction
User area
Actions and
reactions
Events
PSE/1-8
The first softkey level is called the main menu or data area bar. It generally
reflects the main logical subdivision of the user interface. The individual local
menus, which are hidden at this level behind the softkeys, are therefore also
known as the user area. One menu is normally allocated to one user area.
The main subdivision into user areas can be displayed on the softkeys with the
User Area Key at any time, regardless of the level of nesting where the user is
currently located.
The allocation of the user areas to the softkeys on the OP 030 can be found in
the file \proj\std\sy_be_sk.c (not MMC 100/HMI Embedded).
Values of NCK/MMC/PLC variables can be read, written, initialized, processed
and calculated in action and reaction routines.
Reaction and action routines are assigned to a window.
Action routines are executed in transition phases, e.g. when menus or windows
are opened or closed.
Action routines are used for initializing, saving and restoring variables and
internal statuses.
Reaction routines are executed as a reaction to a user action (such as the
press of a softkey or other key) or to changes in variable values (indirectly
through events).
The operating sequence is controlled by two factors: user actions (inputs) and
status changes on the machine tool.
User actions are manifested in keyboard events (including softkey events and
key presses).
The state of the machine tool can be supervised by means of monitoring
functions (event list with BIT_EVENT, VALUE_EVENT, WATCH_EVENT).
When the specified state occurs, a defined internal event is generated.
Actions can be triggered in response to the occurrence of both keyboard
events and internal events – these actions are called reactions.
SINUMERIK 840D/810D Configuring the OP 030 Operator Interface (FBO) – 09.01 Edition
© Siemens AG, 2001. All rights reserved
09.01