Lenze DDS Function library Drive Manual de usuario Pagina 42
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2.3.3 Up/down counter (L_FCNT)
Function library LenzeDrive.lib
Digital signal processing
2−32
L
LenzeDrive.lib EN 1.7
2.3.3 Up/down counter (L_FCNT)
This FB is a digital up/down counter, that is limited to the value nCmpVal_a.
CTRL
L_FCNT
bClkUp_b
nLdVal_a
bLoad_b
nCmpVal_a
byFunction
bClkDown_b
nOut_a
bEqual_b
Fig. 2−38 Up/down counter (L_FCNT)
VariableName DataType SignalType VariableType Note
bClkUp_b Bool binary VAR_INPUT FALSE−TRUE edge = counts up by 1.
bClkDwn_b Bool binary VAR_INPUT FALSE−TRUE edge = counts down by 1.
nLdVal_a Integer analog VAR_INPUT Start value
bLoad_b Bool binary VAR_INPUT TRUE = accept start value
The input has the highest priority.
nCmpVal_a Integer analog VAR_INPUT Comparison value
nOut_a Integer analog VAR_OUTPUT The count value is limited to ±32767.
bEqual_b Bool binary VAR_OUTPUT TRUE = comparison value reached.
byFunction Byte VAR CONSTANT RETAIN Selection of the function
Parameter codes of the instances
VariableName L_FCNT1 SettingRange Lenze
byFunction C1100 1 ... 2 1
Function
Selection of the
Function
Description
byFunction = 1 If the count value nCmpVal_a , the output bEqual_b is set to TRUE. At the next clock cyle, the
counter is reset to the value nLdVal_a and the output bEqual_b is set to FALSE.
byFunction = 2 If the count value = nCmpVal_a , the counter stops( bClkUp_b / bClkDwn_b are ignored).
bLoad_b = TRUE sets the counter to the value at nLdVal_a and responds to bClkUp_b / bClkDwn_b
again.
- Global Drive 1
- PLC Developer Studio 1
- Important note: 2
- Contents 3
- 1.1 About this Manual 5
- 1.1.2 Description layout 6
- 1.1.4 Terminology used 6
- 1.2.1 Hungarian Notation 7
- LenzeDrive.lib EN 1.7 10
- 2 Function blocks 11
- 2.1 General signal processing 12
- General signal processing 13
- L _ A B S 14
- Analog signal processing 15
- 2.2.2 Addition (L_ADD) 15
- * ( - 1 ) 18
- L _ A N E G 18
- 2.2.6 Arithmetic (L_ARIT) 21
- 2.2.7 Changeover (L_ASW) 22
- 2.2.8 Comparison (L_CMP) 23
- 2.2.10 Dead−band (L_DB) 30
- L _ L I M 32
- 2.2.13 Delay (L_PT1_) 33
- 2.2.14 Ramp generator (L_RFG) 34
- 2.3 Digital signal processing 39
- L_DIGDEL 40
- Digital signal processing 41
- 2.3.2.2 Dropout delay 41
- 2.3.2.3 General delay 41
- 2.3.4 Flip−flop (L_FLIP) 43
- 2.3.5 Logical NOT (L_NOT) 44
- 2.3.6 Logical OR (L_OR) 45
- 2.3.7.1 Evaluate rising edges 46
- 2.4.1 Arithmetic (L_ARITPH) 48
- ± 2 - 1 49
- 2.4.3 Comparison (L_PHCMP) 50
- 2.4.4 Difference (L_PHDIFF) 51
- L _ P H D I V 52
- R e v o l u t i o n 52
- 2.4.6 Integration (L_PHINT) 53
- 2.4.6.1 Constant input value 53
- 2.4.7 Integration (L_PHINTK) 55
- 2.4.7.1 Constant input value 56
- Given values: 58
- Solution: 58
- 2.5 Signal conversion 59
- Signal conversion 60
- 2.5.4 Conversion (L_CONVVV) 62
- 2.6 Communication 64
- Communication 65
- 2.6.4 Read codes (L_ParRead) 65
- 2.7 Special functions 73
- Special functions 74
- 2.7.2 Fault trigger (L_FWM) 78
- 2.7.4.1 Main setpoint channel 84
- 2.7.4.2 JOG setpoints 85
- 2.7.4.3 Setpoint inversion 85
- 2.7.4.5 S−ramp 87
- 2.7.4.6 Arithmetic operation 87
- 2.7.4.7 Additional setpoint 88
- 2.7.5.2 Ramp generator 92
- 3 Appendix 95
- Appendix 100
- Integration (L_PHINT), 2−43 101
- Constant input value , 2−43 102
- Constant input value , 2−46 102
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