UM353-1B Contents
April 2012 vii
PREFACE
Conventions and Symbols
The following symbols may appear in this manual and may be applied to the equipment. The reader should become
familiar with the symbols and their meaning. Symbols are provided to quickly alert the user to safety related
situations, issues, and text.
Symbol Meaning
DANGER
Indicates an immediate hazardous situation which, if not avoided, will result in death
or serious injury.
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in death
or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor
or moderate injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in
property damage.
NOTICE
Indicates a potential situation which, if not avoided, may result in an undesirable
result or state.
IMPORTANT
Identifies an action that should be taken to avoid an undesirable result or state.
Note
Identifies additional information that should be read.
or
Electrical shock hazard. The included Warning text states that the danger of
electrical shock is present.
Explosion hazard. Indicates that the danger of an explosion hazard exists.
Electrostatic discharge. The presence of this symbol indicates that electrostatic
discharge can damage the electronic assembly.
Conventions and Usage Notes:
• In this User’s Manual, the Siemens 353 can be referred to as a Model 353 or simply a 353. The terms controller
and station are also used to prevent repetition.
• This manual describes the functionality provided by Design Level “B” MPU Controller board firmware,
version 4.0.
• Part numbers are for items ordered from the Process Instrumentation Business Unit (PIBU) of Siemens
Industry, except as noted.
• Date format is Month-Day-Year, except as noted.
• Time format is 12 hour (a.m./p.m.), except as noted.
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