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8.2.11 Access Setpoint: ‘AcSP’
This function activates a separate menu that
provides direct access to the alarm setpoints
when the instrument is in the display mode.
See section 8.2.12 for a full description. An
operator may therefore adjust the alarm
setpoints without having access to the
programme and alarm menus. Further
protection is provided by a separate security
code.
This direct access menu may be enabled and a
separate security code entered from the 'AcSP'
function in the main programme menu as
shown in Fig 11. To change the menu
parameters select 'AcSP' from the programme
menu and press
P.
This will display the
enable prompt 'EnbL'.
Press
P
again to reveal if the direct access
menu is 'On' or 'OFF'. The
Up
or
Down
buttons will toggle the display between the two
conditions.
If 'OFF' is selected, the operator will not have
access to the setpoints from the display mode.
Return to the 'AcSP' prompt in the main menu
by pressing
E
twice.
If 'On' is selected, the operator will have direct
access to the alarm setpoints from the display
mode via a separate optional security code.
To define this four digit numeric code press
E
to return to the 'EnbL' prompt followed by the
Up
or
Down
button to select the access code
prompt 'AcCd'. Pressing
P
will then reveal the
current security code. The flashing digit of the
code may be changed by operating the
Up
or
Down
push-buttons and pressing the
P
button
will transfer control to the next digit. When the
required code has been entered, press
E
twice
to return to the 'AcSP' prompt in the
programme menu.
Entering code 0000 will disable the security
code allowing direct access to the setpoints in
the display mode by pressing the
P
and
Up
buttons simultaneously.
New instruments with alarms are supplied with
the security code set to 0000
8.2.12 Adjusting alarm setpoints from the
display mode
Access to the two alarm setpoints from the
indicator display mode is obtained by operating
the
P
and
Up
push-buttons simultaneously as
shown in Fig 12. If the setpoints are not
protected by a security code the alarm setpoint
prompt 'SPr1' or 'SPt1' will be displayed
depending upon whether a rate or total alarm
has been programmed. If the setpoints are
protected by a security code, 'COde' will be
displayed first. Pressing
P
again will enable
the alarm security code to be entered digit by
digit using the
Up
and
Down
buttons to change
the flashing digit and the
P
push-button to
move control to the next digit. If the correct
code is entered pressing
E
will then cause
alarm setpoint prompt 'SPx1' to be displayed. If
an incorrect security code is entered, or a
button is not pressed within ten seconds, the
instrument will automatically return to the
display mode.
Once within the menu pressing the
Up
or
Down
buttons will toggle the display between the two
alarm setpoint prompts 'SPx1' and 'SPx2'.
Fig 12 Setpoint adjustment from the display
mode
To adjust an alarm setpoint select 'SPx1' or
'SPx2' and press
P
which will reveal the current
setting. Each digit of the setpoint may be
adjusted using the
Up
and
Down
push-buttons,
and the
P
button to move control to the next
digit. When the required setpoint has been
entered, pressing
E
will return the display to
the 'SPx1' or 'SPx2' prompt from which the
other setpoint may be selected, or the indicator
may be returned to the display mode by
pressing
E
again.
Note:
Direct access to the alarm setpoints is
only available when the menu is enabled - see
section 8.2.11
Summary of Contents for BA544D
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