3 instrument zero indicators, 4 communication indicators, 5 instrument and process status indicators – INFICON Composer Gas Concentration Controller User Manual

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Composer Operating Manual

4.3.5.2.3 Instrument Zero Indicators

FACTORY ZERO . . . . . . . . . . . . . . Illuminates when the instrument is first

powered on and indicates that the
reference zero is still at factory settings for
the chosen carrier gas (controlled by the
molecular weight and gamma parameters
of the carrier gas) and temperature.

USER ZERO . . . . . . . . . . . . . . . . . Illuminates when the user has set the

reference zero (which overrides the
Factory Zero). See

below, and

section

4.2 on page 4-2

for procedures.

4.3.5.2.4 Communication Indicators

SEND . . . . . . . . . . . . . . . . . . . . . . Illuminates whenever the instrument is

transmitting digital data.

RECEIVE . . . . . . . . . . . . . . . . . . . . Illuminates whenever the instrument is

receiving digital data.

4.3.5.2.5 Instrument and Process Status Indicators

WARNING . . . . . . . . . . . . . . . . . . . Illuminates when various warning

conditions are present. Specific conditions
causing this indicator will be displayed in
the numeric area if an error, or by pressing
5 if a warning. See

section 7.4.4, Error

Codes, on page 7-10

, for meanings of the

codes.

LOCKED . . . . . . . . . . . . . . . . . . . . Illuminates when the “parameter lock” dip

switch is activated, see

section 4.3.6.5,

CFGR1, on page 4-25

, or when the remote

communications “remote lock” command
has been given, see

section 7.4.3, List of

Commands with their Subcommands,
Data, and Response Data., on page 7-5