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).
Let’s fill in the table seen above:
|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):
We can see that if a coil is to be controlled by several routes, these different commands are added with a logical OR.