Technical data

The other group is the five function keys with their IEDs and the corresponding text
elements on the LCD [B].
Function block LEDGEN
• Handles an external acknowledge signal as source to acknowledge the LEDs.
• Generates an additional pulse for general purposes whenever the LEDs are
acknowledged by the operator.
• Generates a pulse whenever a new LED signal occurs. It may be used to trigger an
acoustical alarm.
• Handles the timer tReset and tMax for the LED operation mode 'LatchedReset-S'.
Function block GRP1_LED1 to GRP3_LED15
• The 15 LEDs on the right side of the LCD can indicate in total 45 alarms,
warnings or other signals to the operator. They are organized in three groups 1 to 3.
• Each signal group belongs to one function block.
• Each LED illuminates in one of the three colors: RED, YELLOW or GREEN.
• The organization of flashing, acknowledgment and group selection is done directly
between the function blocks and the basic LHMI keys, the 'Multifunction' key [a]
to toggle between the three groups or the 'Clear' key [b] to acknowledge or reset
the LEDs.
• Only the programming of the signals is needed for the LEDs.
• The operation mode of the LEDs is defined in Parameter Setting tool.
Function block FNKEYMD1 to 5
• Every function key has an own FNKEYMD function block.
• The 5 function keys on the left side of the LCD [B] can be used to process demands.
• The function block handles the signal for the LED included in the key as input signals.
• The LED signal of the key is independent of the key function and must be
programed to process demands.
• The function block handles the operators command when the key is pressed as
output signal.
• The functions are activated whenever a key is pressed the first time. The
corresponding text elements for the five keys appear on the left side of the LCD.
No execution of the function is done. So the first push is used to activate the
presentation only.
• The next key push is handled as activate function and the output signal of the
function block is set.
• The operation mode of the function key is defined in Parameter Setting tool (pulse,
toggle).
1MRK 511 261-UUS A Section 6
Local HMI engineering
650 series ANSI 75
Engineering Manual