Lenze 8400 - Page 341

Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23 341
6 I/O terminals
6.1 Digital input terminals
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• dnPosIn12_p provides the counter content of the bipolar integrator.
• If the counter content exceeds a value of +32767 encoder revolutions (corresponds to
+2147483647 incr.), an overflow occurs and the counting process continues at a value of -
32768 encoder revolutions.
• If the counter content falls below a value of -32768 encoder revolutions (corresponds to -
2147483648 incr.), an overflow occurs and the counting process starts at a value of +32767
encoder revolutions.
• bPosIn12_State is set to TRUE if the comparison value set in C02845
has been reached.
Function at input value with sign reversal
Selection: C02844/1
= "2: Loading with level + reset"
[6-3] Switching performance if the input signal changes signs
• If "2: Loading with level + reset" is selected in C02844/1, the bPosIn12_Load input is status-
controlled: In case of a TRUE signal, the integrator is loaded with the value at dnPosIn12_Set_p
and the bPosIn12_State output is set to FALSE.
•A positive nFreqIn12_v signal is incremented (the counter content is increased with every cycle).
•A negative nFreqIn12_v signal is decremented (the counter content is reduced with every cycle).
• dnPosIn12_p provides the counter content of the bipolar integrator.
• If the positive counter content is higher than the comparison value set in C02845
, the
comparison value will be subtracted from the counter content, and bPosIn12_State will be set
to TRUE for one task cycle.
• If the negative counter content is lower than the comparison value set in C02845
, the
comparison value will be added to the counter content, and bPosIn12_State will be set to
TRUE for one task cycle.
 Sign reversal of the value at nFreqIn12_v
 C02845
: Comparison value (applies to both positive and negative value range)
dnPosIn12_p
t
0
TRUE
FALSE
bPosIn12_State
t
0
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