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Bosch DDU 9 - Condition Channels

Bosch DDU 9
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Display Configuration | 10
Bosch Motorsport DDU 9 65/148
Example: Setting up a condition for maximum front brake
pressure.
20
20
10
Max brake pressure of the variable ‘front p_br_front_mx’
Reset
value
is used
Hold
max.
value
Follow
max.
value
Reset
value
is used
Time
Time
Condition ‘p_br_front > 20’
Brake pressure front p_br_front
30
40
30
40
10
Brake pressure ‘front p_br_front’
Hold max.
value
Hold max.
value
Threshold
reached
At power-up, the reset value (10) is used for ‘p_br_front_mx’.
‘p_br_front’ rises to 30. As ‘p_br_front’ is > 20 (condition is TRUE), the condition ‘max
(p_br_front, p_br_front_mx)’ in the THEN window is triggered. The condition sets the
bigger value as new value for ‘p_br_front_mx’. As ‘p_br_front’ (30) is bigger than
‘p_br_front_mx’ (10), the new value for ‘p_br_front_mx’ is set to 30.
Although ‘p_br_front’ falls to 25, the value of ‘p_br_front_mx’ stays 30. This is caused
by the THEN-condition, because p_br_front_mx’ (30) is still bigger than
p_br_front’ (25).
As ‘p_br_front’ rises to 40. As ‘p_br_front’ (40) is bigger than ‘p_br_front_mx’ (30), the
new value for ‘p_br_front_mx’ is set to 40.
As ‘p_br_front’ falls below 20, the IF-condition turns to FALSE. Now the OTHERWISE-
condition is triggered. Because the condition ‘p_br_front_mx’ sets the value of
‘p_br_front_mx’ and the value that is already set to 40 before, nothing changes.
When ‘p_br_front’ rises to 40, the If-condition changes to TRUE again and triggers the
THEN-condition. Now the reset value (10) is used for ‘p_br_front_mx’ in the THEN-
condition.
Because 40 is bigger than 10 the new value of ‘p_br_front_mx’ is 40.
10.6 Condition channels
Condition channel
Logical operations on measurement channel(s)
If-Else structure with reset
Logical result
Result can be used as input source for Alarm display elements and further calculations
in the whole RaceCon project.
Condition combination
Combination of several (up to 16) condition channels for more complex calculations

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