Lenze DDS Function library Drive - Manual (Page 47)

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.