Siemens SIMATIC HMI OP 77B Operating Instructions Manual page 2

5 H O H D V H       
Safety Guidelines
This manual contains notices intended to ensure
personal safety, as well as to protect the products and
connected equipment against damage. These notices
are graded according to severity by the following texts:
Danger
indicates that death or severe personal injury will result
if proper precautions are not taken.
Warning
indicates that death or severe personal injury can result
if proper precautions are not taken.
Caution
used with the safety alert symbol indicates a potentially
hazardous situation which, if not avoided, may result in
minor or moderate injury.
Caution
used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided,
may result in property damage.
Notice
indicates that unwanted events or status can occur if
the relevant information is not observed.