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7. OPERATOR GUIDE
7.1.
Displays and keys
The display and keys for each model are described in para-
graphs "1.3.1. Display and keys 650 L" on page 8 for the
650 L, "1.4.1. Display and keys 1250 L" on page 10 for
the 1250 L.
7.1.1.
Navigating the menus
Keys are used for navigating menus and submenus, chan-
ging parameters, and confirming choices.
Their function depends on the context and on how long they
are pressed.
The LEDs above the keys not only give confirmation
that each key has been pressed (by flashing), but
also show which keys can be used in each situa-
tion.
The following navigation functions are assigned to the keys:
Scroll User Configuration menu (Setpoint, Alarm
setpoints, Control output, etc.).
Each time the key is pressed, it confirms the value
of the displayed parameter and goes to the next
item on the menu.
Keep the key pressed for more than 2 seconds to
enter the Programming/Configuration Menu.
7.2.
Power-on
The indicator runs a self-diagnostics test immediately after
power-on.
During the test all segments of the display flash and a check-
sum is run.
The hardware resources present are also acquired.
If the self-diagnostics test detects no errors, the indicator
enters normal functioning state (display shows Home page).
7.3.
Operation as indicator
The device's normal operating mode is indicator-only.
The display shows the following information:
•
PV displays the process variable value;
•
SV displays alarm 1 limit value
•
by pressing the
quence the significant values that condition indicator
function:, alarm setpoints, etc., which can be changed if
necessary (parameters in the user menu).
Keep the
key pressed for more than 2 seconds to enter
the Programming/Configuration menu.
7.
OPERATOR GUIDE
key the PV display shows, in se-
80224_MHW_650 L - 1250 L_07-2018_ENG - 76
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Each time the key is pressed, you go back to the
previous menu item or to the higher menu level, ac-
cording to the context.
Keep the key pressed for more than 2 seconds to
return to the Home page.
Press the key to enter a submenu or to lower the di-
splayed parameter value, according to the context.
Press the key to raise the value of the displayed
parameter.
When the process variable is displayed, if held down for at
least 3 seconds in standard configuration the
alarms.
If any system errors are detected, the indicator displays the
related information.
If the error is caused by a damaged program, update the
firmware.
If the error is caused by incorrect configuration, reconfigure
the indicator with PC and GF_eXpress software.
Errors are saved in a register and can be displayed with the
Error function on the INFO menu.
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mutes
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