IEC13000289-2-en.vsd
Basic key area
LCD
a b
B A
GUID-A374CBAE-CFB8-47CE-A2AD-514F8B6F20CA V2 EN-US
Figure 48: Local HMI: Placement of local HMI operation elements
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 timers 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.
1MRK 511 398-UEN C Section 7
Local HMI engineering
670 series 2.2 IEC 85
Engineering manual
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