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SECTION III OPERATION

SM 7063 07/97 3-23

3.10.2 Automatic Arming

Not all railroads elect to use the relative security provided by the Arming technique. They may choose

to use "Automatic Arming" instead. In this case, the CDU is always Armed to the entered ID code, the

Emergency Switch is always enabled, and there is no need for an operator at the rear of the train.

This feature is configurable via the Diagnostic PC (see Section IV). When the Automatic Arming

function is enabled, the Scan ID function is locked out cannot be enabled.

3.11 MOTION INDICATION

The state of motion of the last train car is indicated on the CDU Front Panel by the

MOVING

and

STOPPED

annunciators. If the End Unit has the capability to sense the initial direction of motion, this

is displayed on the

ID Code Display

“FORWARD”

“REVERSE”

1. From CDU power-up both the

MOVING

and

STOPPED

annunciators remain OFF until the last train

car begins to move. From then on, one or the other will always be lit to indicate the state of motion

of the last train car.

2. If the last car initially begins to move forward, the End Unit sends a message indicating forward

motion. When the message is received by the CDU, the

MOVING

annunciator turns ON and the

Code Display

flashes:

" FORWARD "

for 10 seconds, then continues to steadily display “FORWARD” for another 10 seconds. This will

alternate with other information being displayed such as “ID = #####” or one of the ALARM

messages.

3. If the last car initially begins to move backward, the End Unit sends a message indicating reverse

motion. When the message is received by the CDU, the

MOVING

annunciator turns ON and the

Code Display

shows:

" REVERSE "

for 10 seconds, then continues to steadily display “REVERSE” for another 10 seconds. This will

alternate with other information being displayed such as “ID = #####” or one of the ALARM

messages.

4. When the last car of the train comes to rest, the End Unit sends a message indicating no motion.

When the message is received by the CDU, the

STOPPED

annunciator turns ON and stays ON

until movement at the rear of the train is again detected.

If the

STOPPED

annunciator lights during the indication of “FORWARD” or “REVERSE” (i.e., train

moves and then very shortly stops), the directional information will immediately extinguish.