Activating
signal RED
LED
Acknow.
IEC09000314-1-en.vsd
Activating
signal YELLOW
G
Y
R
R Y
Activating
signal GREEN
IEC09000314 V1 EN
Figure 18: Operating sequence 3, three colors involved, alternative 1
If an indication with higher priority appears after acknowledgment of a lower priority
indication the high priority indication will be shown as not acknowledged according
to
Figure 19.
Activating
signal RED
LED
Acknow.
IEC09000315-1-en.vsd
Activating
signal YELLOW
G
G
R
R Y
Activating
signal GREEN
IEC09000315 V1 EN
Figure 19: Operating sequence 3, three colors involved, alternative 2
Sequence 4 (LatchedAck-S-F)
This sequence has the same functionality as sequence 3, but steady and flashing light
have been alternated.
Sequence 5
LatchedColl-S
This sequence has a latched function and works in collecting mode. At the activation
of the input signal, the indication will light up with a steady light. The difference to
sequence 3 and 4 is that indications that are still activated will not be affected by the
reset that is, immediately after the positive edge of the reset has been executed a new
reading and storing of active signals is performed. Every LED is independent of the
other LEDs in its operation.
1MRK 502 048-UEN A Section 5
Local Human-Machine-Interface LHMI
73
Technical manual
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