|
DTM30 POINT CELLS
The DTM30 has 30 cells, each of which can be used
for either point control or detection indication. To control a point, we will
use one cell.
In this example - CELL1.
To control and indicate the current direction of
the point with LEDs, a DTM30 will use two groups
of output from cell1,
-
one from SKT2 - LED drivers
- LED1A and LED1B
-
one from SKT5 - Push Button
- SW1A
The DTM30 would be programmed to use CELL1 as a
Point Cell
Note:
On LEDs - C=Cathode, A=Anode:
Anodes are common = green line
To detect the position of a loco, we would use a
detection circuit – called sensor in DTM
language. Here we will use CELL 1 only for driving one LED (LED1A) to show
that a loco has arrived at that sensor location. The DTM30 would be
programmed to use CELL1 as a Sensor Cell. The next sensor would be connected
to Cell 2 in the same way from different SKT2
pins.
|