Function library lenzedrive.lib, Digital signal processing, 2 evaluate falling edges – Lenze DDS Function library Drive User Manual
Page 47: 3 evaluate rising and falling edges
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Function library LenzeDrive.lib
Digital signal processing
2.3.7
Edge evaluation (L_TRANS)
2−37
L
LenzeDrive.lib EN 1.7
2.3.7.2
Evaluate falling edges
byFunction = 1
t
t
bIn−b
bOut_b
wPulseTime
wPulseTime
Fig. 2−47
Evaluation of TRUE−FALSE transitions
Functional sequence
1. If a TRUE−FALSE or a FALSE−TRUE transition occurs at nIn_b, then bOut_b switches = TRUE.
2. After the time defined as wPulseTime has elapsed, then bOut_b switches = FALSE, provided
no further TRUE−FALSE transition has occurred at nIn_b.
2.3.7.3
Evaluate rising and falling edges
byFunction = 2
t
t
bIn_b
bOut_b
wPulsTime
wPulsTime
Fig. 2−48
Evaluation of both transitions
Functional sequence
1. If a TRUE−FALSE or a FALS−TRUE transition occurs at nIn_b, then bOut_b switches = TRUE.
2. After the time defined as wPulseTime has elapsed, then bOut_b switches = FALSE, provided
no further TRUE−FALSE or FALSE−TRUE transition has occurred at nIn_b.