Specifications

ST900 Family General Handbook
667/HB/32900/000 Issue 11 Page 225 of 265
3
3
2
2
O
O
N
N
S
S
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T
R
R
E
E
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E
T
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C
C
O
O
N
N
F
F
I
I
G
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U
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R
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A
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32.1 Introduction
A facility to enable On Street Programming exists for non UK controllers. A
configuration option enables this facility, and data entry for the configuration is
entered via the handset.
Prior to any data being changed the signals must be switched off and a second
security access code has to be entered.
This allows an engineer on the street to configure the junction data items specified
below, allowing them to alter normally fixed items such as the number of phases and
stages and their relationship.
32.2 On-Street Configurable Items
The values in the following data items can be changed from the values set up by the
configurator (see the ST900 Controller Handset Handbook for a complete list of
commands and the parameters that can be changed):
 Number of phases
 Number of stages
 Phase type
 Phases in stage
 Non-conflicting phases
 Phase start & termination conditions for green arrows & demand
dependent phases
 Prohibited and alternative moves
 Fixed time sequence
 Arterial stage.
Whilst in on street configuration mode, if a power-fail occurs or the power is
switched off/on again, the controller comes back into on street configuration mode
but with all access codes disabled (i.e. access commands need to be re-entered to
re-enable access). Data changes completed prior to the power off/on are not lost.
Once the user has completed any changes, the complete command needs to be
entered. This will enable the use of the new configuration once the controller has
been powered off/on.
The controller should now be running normally with the phases cycling on the LEDs
on the Lamp Switch cards, but with real signals extinguished (since the signals
needed to be switched OFF while in the On-Street Configuration State).
When the user is satisfied that the controller is working successfully, the signals can
be switched ON.