Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Thu, 22 Feb 1996 15:00:05 +0000 (GMT)

On Thu, 22 Feb 96 08:30:16 -0500 [email protected] wrote:
>For dm controllers, it would be better IMHO to go ahead and display
>the controller and value, but change the cursor like medm does to
>indicate no write access, rather than replacing the controller with
>a box saying "Write Access Denied"

IMHO there should be a way of being able to put _something_ on a display which 
tells you without having to move a mouse whether you have write access to a 
system.  The most obvious way I can think of would be to incorporate access 
permissions into the colour rules of the individual controllers somehow.  If this 
isn't easy/logical though you must still be able to design a screen where you can 
tell at a glance in which of a small number of access groups this client appears.  
It would be good to change the mouse cursor as well for those who haven't defined 
a suitable colour rule.  I also agree with Chip that if you have read-only access 
you must be able to see what the current setting is from a controller rather than 
just a "Write Access Denied" box.

- Andrew

  O o ._    Andrew Johnson, Royal Greenwich Observatory
     __\\_      Madingley Road, Cambridge, CB3 0EZ
  __|ooooo|__   Tel +44 (0)1223 374823  Fax 374700
~~\_________/~~	WWW http://www.ast.cam.ac.uk/~anj/

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System