Siemens UTMC OTU Handbook page 87

flags and the 'Warm-up' and 'Error counts' are described in more detail in section
7.3.11.
For inputs on the Bus MOVA I/O card, black background = input open circuit, red
background = input short circuit.
For semi-integral MOVA, the input sense can be inverted or not, dependant on the
controller configuration.
The 'Multistage' flag is set to '1' if the confirm inputs indicate more than one stage is
active, e.g. when the controller has failed or the I/O cables have been disconnected
from the back of the MOVA unit.
The 'Demanded stage' entry shows the stage that MOVA is currently demanding, or
would try to demand if it was on control.
The 'Watchdog' count should normally increment every half a second and remain in
the range 0 to 20. It is used internally by the MOVA software to ensure that the various
MOVA sub-systems are functioning correctly.
While the commissioning screen is active (and the description of these keys is being
displayed), the state of the 'MOVA enabled' flag and the 'On Control' flag can be
toggled by simply pressing 'M' or 'C' respectively. Similarly, the 'Error Count' can be
cleared back to zero by simply pressing 'Z'.
Important: The following causes the MOVA unit to take control of
10) 7.3.9
the Intersection and care should be taken to avoid undue disruption
to traffic flows.
Still using the commissioning screen, force each stage in turn and
check that the controller moves to the required stage and that the
correct stage / phase confirm bits are activated.
(Remember to press <SPACE> to display the 'Screen Keys' before attempting to
use any of the 'single key' commissioning screen commands)
To test the force bits and the confirms from the controller, the MOVA unit should first be
switched off-line, i.e. if the 'MOVA Enabled' flag is set to '1', press 'M'.
To force a stage simply press the number of the required stage, e.g. press '1' for stage
1 and then press '2' when stage 2 is required.
The MOVA unit will keep forcing the selected stage for about one minute after the key is
pressed. To end the test, press '0'.
Pressing 'X' will exit the commissioning screen and the MOVA Main Menu will be
displayed.
Pressing the space bar toggles between the single key press commands and the
MOVA Main Menu (which may vary between different versions of MOVA):
667/HB/31601/000 Page 87
UTMC OTU/MOVA Handbook
Issue 5