Siemens SIMATIC Ident MV340 System Manual page 39

Basic Operations
Lighting Zones
The following charts indicate the illumination zones based on the SIMATIC MV340 design.
Dome Lighting Zone
Dome illumination de-emphasizes surface texture and elevation (curved surface).
Dome Illumination
Texture and Elevation
are De-Emphasized on
the Mark's Surface
3-5
SIMATIC MV340 User's Manual