File	Date	Author	Commit
glade	2011-04-30	Luis Galdos	[f1c767] setup.py: Added Glade XML to executable, Import...
test	2011-04-24	Luis Galdos	[d4ee12] cleanup: Removed unused file, renamed glade file
.gitignore	2011-04-30	Luis Galdos	[53d46e] setup.py: First working version with Windows theme
COPYING	2011-04-24	Luis Galdos	[a733c3] license: GPL version 3
README	2011-04-24	Luis Galdos	[366d4a] README: Need a short howto
README.cygwin	2011-04-29	Luis Galdos	[851c33] py2exe: Initial setup script (not completed)
README.windows	2011-04-29	Luis Galdos	[851c33] py2exe: Initial setup script (not completed)
TODO	2011-04-24	Luis Galdos	[70f991] TODO: Test under Windows with py2exe
alarms.py	2011-04-17	Luis Galdos	[afe2d7] windows: Creation of tags output working
config.py	2011-04-23	Luis Galdos	[72be9b] filechooser: Removed delete_event handler
config.xml	2011-04-20	Luis Galdos	[247409] windows: Added the about dialog
inputs.py	2011-04-19	Luis Galdos	[87291e] main: Added configuration file operations (open...
main.py	2011-04-30	Luis Galdos	[f1c767] setup.py: Added Glade XML to executable, Import...
setup.py	2011-04-30	Luis Galdos	[f1c767] setup.py: Added Glade XML to executable, Import...
windows.py	2011-04-23	Luis Galdos	[72be9b] filechooser: Removed delete_event handler

Read Me

README
------

Start situation
---------------

You have a Data Block (DB) with BOOL variables that are set
when the PLC application requests to display an event (alarm/warning) 
in the HMI (panel). For this purpose, the events must be created in 
Wincc Flexible, but this is unfortunately a time-consuming task due 
the following limitations:

- For discrete alarms it's not possible to use tags of
  type BOOL as trigger tag. Only tags of type WORD can be
  used

- For selecting a BOOL in a WORD tag, a trigger bit must
  be defined. This bit must be swapped. Here an example:
  In the PLC the bit DB15.DBX0.0 sets an event. In Flexible
  this bit is inside the WORD tag DB15.DBW0 with the trigger 
  bit of position EIGHT, and not ZERO (as expected)

- As only WORD tags can be used for the events, additional
  tags must be created. Every time that new alarms are added, 
  new WORD tags must be created too.

- When the DB structure is changed, the bit position of all the
  events must be reorganized. Sure, this doesn't apply when the
  DB doesn't change but this is just a limitation and inflexible


Solution
--------

Generate a SCL source file from the DB and use this file for creating 
two files (alarms and tags) that can  be imported in WinccFlex.
The file for the alarms will consider the swapping of the bit position
and will use the comment from the SCL file as event text. On the other
side, the required WORD tags will be created too, so that they can be 
imported too.