Original page created on 10/07/2012.
Programming the route VOIE 3
What is the purpose of the route VOIE 3?
By doing the same reasoning, we see that this time the turnout D is in the diverging position, as F, but, in addition, C must be diverging and G must be in the direct position (reminder: G has been represented upside down for drawing convenience, but it is clear that its green LED is on).
How do we program the route VOIE 3?
Let’s fill in the table seen above:
| Turnout | A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|---|
| Coil | Q1 | Q2 | Q3 | Q4 | Q5 | Q6 | Q7 |
| Route VOIE 1 | 1 | X | X | 0 | X | 0 | X |
| Route VOIE 3 | 1 | X | 1 | 1 | X | 1 | 0 |
The coil SQ1 (turnout A) must therefore be excited by VOIE 1 OR VOIE 3, hence the new writing (remember that OR is written with the + sign):
- SQ1 = I8 + I9 (meaning: the SQ1 coil will be energized when pressing the route button 1 (I8) or the route button 3 (I9))
- SQ3 = I9
- SQ4 = I9
- SQ6 = I9
- RQ7 = I9
We can see that if a coil is to be controlled by several routes, these different commands are added with a logical OR.