Lenze 8400 TopLine - Manual (Page 1689)

Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
1689
19 Function library
19.1 Function blocks
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19.1.173.1 Function 0: Evaluate rising signal edges
[19-78] Switching performance for function selection "0: High edge"
Functional sequence
1. A FALSE-TRUE edge at the bIn input sets the bOut output to TRUE.
2. After the parameterised pulse duration has elapsed, the bOut output is reset to FALSE unless
another FALSE/TRUE edge has been set at the bIn input.
• If an additional FALSE-TRUE edge occurs at the bIn input, the pulse duration starts again from
the beginning, i.e. the bOut output can be retriggered.
19.1.173.2 Function 1: Evaluate falling signal edges
[19-79] Switching performance for function selection "1: Low edge"
Functional sequence
1. A TRUE-FALSE edge at the bIn inputs sets the bOut output to TRUE.
2. After the parameterised pulse duration has elapsed, the bOut output is reset to FALSE unless
another TRUE/FALSE edge has been set at the bIn input.
• If an additional TRUE-FALSE edge occurs at the bIn input, the pulse duration starts again from
the beginning, i.e. the bOut output can be retriggered.
 Pulse duration
TRUE
FALSE
bOut
t
TRUE
FALSE
bIn
t
Œ Œ Œ
 Pulse duration
TRUE
FALSE
bOut
t
TRUE
FALSE
bIn
t
Œ Œ Œ