BEKA BA377E, Руководство пользователя

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6.3 Displays when configured as a Timer
The BA377E has two digital displays and associated
annunciators as shown on page 1.
Elapsed time The upper display shows the
elapsed time since the Timer
was started when
timing-up from
zero and the remaining time
when
timing-down from the set
time. The display may be
formatted as hh:mm:ss; hh:mm;
mm:ss or ss.
Lower display The display options available on
the lower display depend on
whether the Timer repeat cycle
function
CYCLE5
, which can
repeat the timing period up to 99
times, or continuously with a
configurable delay between
periods, is enabled.
CYCLE5
disabled
The lower display shows the set
time
5ET t
, or the lower display
may be disabled if not required.
See 6.5.7
CYCLE5
enabled
The lower display shows the
total number of repeat cycles
requested together with the
number of the current cycle.
Each operation may be briefly
named at it's start or periodically
throughout the cycle.
The lower display may also be
disabled if not required.
See 6.5.7
Reset Activated while elapsed time is
annunciator being reset to zero or to the set
time
5ET t
.
Grand total Activated when the grand total
annunciator time is being shown on the upper
display.
Control output Show status of each optional
annunciators control output.
'1' and '2'.
6.4 Timer structure
Fig 13 illustrates the Timer structure and function as
state diagram. It applies when the instrument is
measuring the time between events or is controlling
external events.
The circles in Fig 13 represent the five Timer states,
Reset , Running, Restart-delay, Paused and
Complete . The lines between the circles represent
the event required to move the Timer between
states. e.g. to initiate timing the Timer is moved
from the
Reset state to the Running state by a start
event. This could be an input signal or operation of
the
&
button. Similarly, to pause the Timer while it
is timing, the Timer must be moved from the
Running state to the Pause state by a stop event
which could be an input or operation of the
*
button.
Reset:
re5et
In this state the Timer is readied for operation.
The Timer is stopped and loaded with zero for
timing-up to the set time
5Et t
, or the set time
5Et t
for timing-down.
Running:
run
Entered by a start event from the Reset or
Paused states. The Timer times-up to
5et t
or times-down from
5et t
to zero depending
upon it's configuration.
Paused:
pau5ed
Entered by a stop event from the Running or
Restart-delay states. Timer is stopped, a start
event returns the timer to it's previous state.
Restart-delay:
delay
This state is only accessed when the Timer
has been configured to repeat the timing cycle
a specified number of times or continuously.
The
Restart-delay state is entered
automatically when the set time
5et t
has
been completed . At the end of the delay time
the Timer automatically returns to the Running
state.
Note: When the Timer leaves the Running
state for the last time, it moves to the
Complete state as there is no Restart-delay in
the last timing cycle.
Complete:
done
Entered automatically from the Running state
when
5et t
has been completed and there are
no more cycles to perform.
When the
CYCLE5
function is enabled the timing cycle
can be specified to repeat up to 99 times, or can
be configured to repeat continuously.
BEKA Application Guide AG374 contains more
information about the Timer structure.