Specifications

ST900 Family General Handbook
667/HB/32900/000 Issue 11 Page 219 of 265
30.1.7 Manual Button Indicators
The Manual Button Indicators are for use during Manual mode. They generally
indicate the number of the current stage selected, but see section 18.2.
These indicators are only illuminated when manual mode is in operation or when the
handset is plugged in. While the controller is moving to the stage, the indicator will
flash once a second, and when the stage is reached, the indicator will stop flashing
and remain on.
30.1.8 Awaiting Command Indicator
When Manual mode is operative, the AWAITING COMMAND indicator illuminates
when a stage change is permitted, i.e. the minimum green periods for the phases in
the current stage have expired (see section 6.5.1).
30.1.9 Prohibited Move Indicator
When Manual mode is operative the PROHIBITED MOVE indicator illuminates if the
selected stage is prevented, deleted by the master time clock or if the move is
prohibited. The indicator will extinguish when a valid move is selected.
30.1.10 Hurry Call Active Indicator (AUX4)
This is illuminated immediately a valid Hurry Call is received and remains
illuminated until the end of the hold period even if Hurry Call mode is not the current
mode due to a higher priority mode being active. Alternatively, the indicator could be
used for any purpose. See Section 30.1.12 for further details.
30.1.11 Higher Priority (UTC) Active Indicator (AUX5)
This is illuminated whenever the current operating mode is higher priority than
manual mode (this could be due to UTC bus priority etc.). Alternatively, the indicator
could be used for any purpose. See Section 30.1.12 for further details.
30.1.12 Spare Indicators
There are three indicators (AUX1, AUX2, AUX3) whose function can be set up in
configuration, e.g. to indicate when an input to a Priority Unit is active, UTC active,
Remote Reconnect, Dim override, Alternative Maximum, Audio override, Barrier Up,
Continuous Demands and/or Extensions, Green Wave etc.
If more than three indicators are required, the HURRY CALL active or HIGHER
PRIORITY active indicators may be used if they are not required for their normal
use. Another use is to indicate the state of the switches SW1, SW2 and SW3, e.g.
to show if Dim Override is active or not.