ABB REO 517 Applications Manual page 306

Multi-function terminals for railway application
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296
LED indication function (HL, HLED)
Press button:
Clear HMI-LCD LEDs
If any HMI-LEDs active,
text on HMI:
C=HLED_ ACK_RST
E=Enter menu
&
Acknowledge/Reset
HMI-LEDs
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The active indications can also be acknowledged/reset from an input (ACK_RST) to the
function. This input can for example be configured to a binary input operated from an
external push button. The function is positive edge triggered, not level triggered. This
means that even if the button is continuously pressed, the acknowledgment/reset only
affects indications active at the moment when the button is first pressed.
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It is also possible to perform the acknowledgment/reset remotely from SMS/SCS. To
do that, the function input (ACK_RST) has to be configured to an output of a command
function block (CD or CM). The output from these command function blocks can then
be activated from the SMS/SCS.
Screen scrolling
Dark
disturbance
screen
indications
&
(
&
Text on HMI:
C=Clear LEDs
E=Enter menu
&
(
Go to menu
(
Go to menu
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