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9.3.11 Access Setpoint: AcSP
This function controls a separate menu which
provides direct access to the alarm setpoints when
the indicator is in the display mode. See section
9.3.12 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 is enabled and a separate
security code entered from the 'AcSP' function in
the programme menu as shown in Fig 11. To
change the menu parameters select 'AcSP' from
the programme menu and press P which 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 the four digit numerical code press P to
return to the 'Enbl' prompt followed by the Up or
Down button to select the access code prompt
'AcCd'. Pressing P will reveal the current security
code. Each digit of the code may be changed by
operating the Up and Down push-buttons, and the
P button to move to the next digit. When the
required code has been entered, press E twice to
return to the 'AcSP' prompt in the Programme
Menu.
Code 0000 will disable the security code allowing
direct access to the setpoints by pressing the P
and Up buttons simultaneously. New instruments
with alarms are supplied with this function disabled
and the security code set to 0000
9.3.12 Adjusting alarm setpoints from the
display mode
Access to the 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 'SP1' will be
displayed. 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 to the next digit. If the
correct code is entered pressing E will cause alarm
setpoint prompt 'SP1' to be displayed. Pressing
the Up or Down button will toggle the display
between the two alarm setpoint prompts 'SP1' and
'SP2'.
If an incorrect security code is entered, or a button
is not pressed within ten seconds, the indicator will
automatically return to the display mode.
Fig 12 Setpoint adjustment from the display mode
To adjust an alarm setpoint select 'SP1' or 'SP2'
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 to the next digit. When the required
setpoint has been entered, pressing E will return
the display to the 'SP1' or 'SP2' prompt from which
the other setpoint may be selected, or the indicator
may be returned to the display mode by pressing E
again.
Direct access to the alarm setpoints is only
available when the
menu is enabled - see section
9.3.11
