BEKA BA577E-SS, Manual

Page: 11 / 38

11
5.4 Timer structure
Fig 9 illustrates the Timer structure and function as a
state diagram. It applies when the instrument is
measuring the time between events or is controlling
external events.
The circles in Fig 9 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
In this state the Timer is readied for operation.
The Timer is stopped and loaded with zero for
timing-up or
5Et t
for timing-down.
Running
Entered by a start event from the Reset or
Paused states. The Timer times-up to
5et t
or times-down to zero depending upon it's
configuration.
Pause
Entered by a stop event from Running or
Restart-delay . Timer is stopped, a start event
returns the timer to it's previous state.
Restart-delay
Entered automatically from Running. At the
end of the delay time automatically returns to
Running .
Complete
Entered automatically from Running when
there are no more timing cycles to perform.
When the
CYCLE5
function is enabled the timing cycle
can be repeated a specified number of times, or
continuously.
5.5 Configuration as a Timer
The BA577E-SS is configured via the four front panel
push buttons. All the configuration functions are
contained in an easy to use intuitive menu that is
shown diagrammatically in Fig 10.
Each menu function is summarised in section 5.5.2
of this manual and each summary includes a
reference to more detailed information.
All new BA577E-SS instruments are supplied
configured as requested at the time of ordering. If
configuration is not requested, the BA577E-SS will
be supplied with default Timer configuration as
shown below, but the instrument can easily be re-
configured on-site.
Function Display Default
Access code
CodE 0000
Function
FunCtion ELAP5E
Input
inPut oP . CoL
Debounce
dEbounCE dEFAuLt
Display 2
di5P-2 5td
Start stop
5tAr5toP LoCAL
Units
unit5 12 : 00 : 00
Set time
5Et t 00 : 00 : 00
Enable repeat cycle
CYCLE5 oFF
Access set time from
AC5Et t oFF
display mode.
Direction of count
uP or dn dn
Recovery from power
p-fail idle
supply failure.
Local total reset
t-rE5Et on
Local grand total reset
Gt-rE5Et oFF
External reset
E-r5et 5td
Enable control output 1 *
EnbL oFF
Enable control output 2 *
EnbL oFF
* Optional output