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Contents

CFC blocks

Glossary

Index

SIMATIC

CFC Library

Manual

11/2006

A5E00848217-01

Siemens AG

Automation and Drives

Postfach 4848

90437 NÜRNBERG

GERMANY

A5E00848217-01

1/2006

Technical data subject to change

Safety Guidelines

This manual contains notices you have to observe in order to ensure your personal safety, as well as to

prevent damage to property. The notices referring to your personal safety are highlighted in the manual

by a safety alert symbol, notices referring to property damage only have no safety alert symbol. The

notices shown below are graded according to the degree of danger.

Danger

indicates that death or severe personal injury will result if proper precautions are not taken.

Warning

indicates that death or severe personal injury may result if proper precautions are not taken.

Caution

with a safety alert symbol indicates that minor personal injury can result if proper precautions are not

taken.

Caution

without a safety alert symbol indicates that property damage can result if proper precautions are not

taken.

Notice

indicates that an unintended result or situation can occur if the corresponding notice is not taken into

account.

If more than one degree of danger is present, the warning notice representing the highest degree of

danger will be used. A notice warning of injury to persons with a safety alert symbol may also include a

warning relating to property damage.

Qualified Personnel

The device/system may only be set up and used in conjunction with this documentation. Commissioning

and operation of a device/system may only be performed by qualified personnel

. Within the context of

the safety notices in this documentation qualified persons are defined as persons who are authorized to

commission, ground and label devices, systems and circuits in accordance with established safety

practices and standards.

Prescribed Usage

Note the following:

Warning

This device and its components may only be used for the applications described in the catalog or the

technical description, and only in connection with devices or components from other manufacturers

which have been approved or recommended by Siemens.

Correct, reliable operation of the product requires proper transport, storage, positioning and assembly

as well as careful operation and maintenance.

Trademarks

All names identified by ® are registered trademarks of the Siemens AG.

The remaining trademarks in this publication may be trademarks whose use by third parties for their

own purposes could violate the rights of the owner.

Disclaimer of Liability

We have reviewed the contents of this publication to ensure consistency with the hardware and

software described. Since variance cannot be precluded entirely, we cannot guarantee full consistency.

However, the information in this publication is reviewed regularly and any necessary corrections are

included in subsequent editions.

SIMATIC CFC Library

A5E00848217-01

iii

Contents

1 CFC blocks 1-1

1.1 Block parameters EN, ENO, SAMPLE_T......................................................... 1-1

1.2 Startup on S7-300 CPUs .................................................................................. 1-2

1.3 CFC blocks ....................................................................................................... 1-3

1.4 Logic blocks of the data type BOOL................................................................. 1-4

1.4.1 BIT_LGC........................................................................................................... 1-4

1.4.2 AND .................................................................................................................. 1-4

1.4.3 OR..................................................................................................................... 1-5

1.4.4 XOR .................................................................................................................. 1-6

1.4.5 NAND................................................................................................................ 1-7

1.4.6 NOR.................................................................................................................. 1-8

1.4.7 NOT .................................................................................................................. 1-9

1.5 Logic blocks of the data type WORD and DWORD ....................................... 1-10

1.5.1 WRD_LGC...................................................................................................... 1-10

1.5.2 WAND_W ....................................................................................................... 1-11

1.5.3 WOR_W.......................................................................................................... 1-12

1.5.4 WXOR_W ....................................................................................................... 1-13

1.5.5 WNAND_W..................................................................................................... 1-14

1.5.6 WNOR_W ....................................................................................................... 1-15

1.5.7 WNOT_W ....................................................................................................... 1-16

1.5.8 WAND_DW..................................................................................................... 1-16

1.5.9 WOR_DW ....................................................................................................... 1-17

1.5.10 WXOR_DW..................................................................................................... 1-17

1.5.11 WNAND_DW .................................................................................................. 1-18

1.5.12 WNOR_DW .................................................................................................... 1-18

1.5.13 WNOT_DW..................................................................................................... 1-19

1.6 Blocks for comparing two input values of the same type ............................... 1-20

1.6.1 COMPARE...................................................................................................... 1-20

1.6.2 CMP_I............................................................................................................. 1-20

1.6.3 CMP_DI .......................................................................................................... 1-21

1.6.4 CMP_R ........................................................................................................... 1-22

1.6.5 CMP_T............................................................................................................ 1-23

1.7 Blocks for converting data types..................................................................... 1-24

1.7.1 CONVERT ...................................................................................................... 1-24

1.7.2 BY_DW ........................................................................................................... 1-25

1.7.3 BY_W.............................................................................................................. 1-26

1.7.4 DI_DW ............................................................................................................ 1-26

1.7.5 DI_I ................................................................................................................. 1-27

1.7.6 DI_R................................................................................................................ 1-27

1.7.7 DW_DI ............................................................................................................ 1-28

1.7.8 DW_R ............................................................................................................. 1-28

1.7.9 DW_W............................................................................................................. 1-29

1.7.10 I_DI ................................................................................................................. 1-29

1.7.11 I_DW............................................................................................................... 1-30

1.7.12 I_R .................................................................................................................. 1-30

1.7.13 I_W.................................................................................................................. 1-31

1.7.14 R_DI................................................................................................................ 1-31

1.7.15 R_DW ............................................................................................................. 1-32

Contents

SIMATIC CFC Library

iv A5E00848217-01

1.7.16 R_I .................................................................................................................. 1-32

1.7.17 W_BY.............................................................................................................. 1-33

1.7.18 W_DW............................................................................................................. 1-33

1.7.19 W_I.................................................................................................................. 1-34

1.7.20 BO_BY............................................................................................................ 1-34

1.7.21 BO_W ............................................................................................................. 1-35

1.7.22 BO_DW........................................................................................................... 1-35

1.7.23 BY_BO............................................................................................................ 1-36

1.7.24 W_BO ............................................................................................................. 1-36

1.7.25 DW_BO........................................................................................................... 1-37

1.8 Arithmetic blocks of the data type REAL ........................................................ 1-38

1.8.1 MATH_FP ....................................................................................................... 1-38

1.8.2 ADD_R............................................................................................................ 1-39

1.8.3 SUB_R............................................................................................................ 1-39

1.8.4 MUL_R............................................................................................................ 1-40

1.8.5 DIV_R ............................................................................................................. 1-40

1.8.6 MAXn_R ......................................................................................................... 1-41

1.8.7 MINn_R........................................................................................................... 1-42

1.8.8 ABS_R ............................................................................................................ 1-42

1.8.9 SQRT.............................................................................................................. 1-43

1.8.10 EXP................................................................................................................. 1-43

1.8.11 POW10 ........................................................................................................... 1-44

1.8.12 LN ................................................................................................................... 1-44

1.8.13 LOG10 ............................................................................................................ 1-45

1.8.14 SIN.................................................................................................................. 1-45

1.8.15 COS ................................................................................................................ 1-46

1.8.16 TAN................................................................................................................. 1-46

1.8.17 ASIN................................................................................................................ 1-47

1.8.18 ACOS.............................................................................................................. 1-47

1.8.19 ATAN .............................................................................................................. 1-48

1.8.20 NEG_R............................................................................................................ 1-48

1.8.21 LIM_R ............................................................................................................. 1-49

1.8.22 EPS_R ............................................................................................................ 1-49

1.8.23 CADD_R ......................................................................................................... 1-50

1.8.24 POWXY........................................................................................................... 1-51

1.8.25 SAMP_AVE .................................................................................................... 1-51

1.9 Arithmetic blocks of the data type INT and DINT ........................................... 1-52

1.9.1 MATH_INT...................................................................................................... 1-52

1.9.2 ADD_I ............................................................................................................. 1-53

1.9.3 SUB_I.............................................................................................................. 1-53

1.9.4 MUL_I ............................................................................................................. 1-54

1.9.5 DIV_I............................................................................................................... 1-54

1.9.6 MOD_I............................................................................................................. 1-55

1.9.7 MAXn_I ........................................................................................................... 1-55

1.9.8 MINn_I ............................................................................................................ 1-56

1.9.9 ABS_I.............................................................................................................. 1-56

1.9.10 NEG_I ............................................................................................................. 1-57

1.9.11 LIM_I............................................................................................................... 1-57

1.9.12 EPS_I.............................................................................................................. 1-58

1.9.13 CADD_I........................................................................................................... 1-59

1.9.14 ADD_DI........................................................................................................... 1-60

1.9.15 SUB_DI........................................................................................................... 1-60

1.9.16 MUL_DI........................................................................................................... 1-61

1.9.17 DIV_DI ............................................................................................................ 1-61

1.9.18 MOD_DI.......................................................................................................... 1-62

1.9.19 MAXn_DI ........................................................................................................ 1-62

1.9.20 MINn_DI.......................................................................................................... 1-63

Contents

SIMATIC CFC Library

A5E00848217-01

1.9.21 ABS_DI ........................................................................................................... 1-63

1.9.22 NEG_DI........................................................................................................... 1-64

1.9.23 LIM_DI ............................................................................................................ 1-64

1.9.24 EPS_Dl ........................................................................................................... 1-65

1.9.25 CADD_DI ........................................................................................................ 1-66

1.10 Flip-flop blocks................................................................................................ 1-67

1.10.1 FLIPFLOP....................................................................................................... 1-67

1.10.2 JK_FF ............................................................................................................. 1-67

1.10.3 RS_FF............................................................................................................. 1-68

1.10.4 SR_FF............................................................................................................. 1-68

1.11 Shift blocks ..................................................................................................... 1-69

1.11.1 SHIFT.............................................................................................................. 1-69

1.11.2 SHL_W............................................................................................................ 1-69

1.11.3 SHL_DW......................................................................................................... 1-70

1.11.4 SHR_W........................................................................................................... 1-70

1.11.5 SHR_DW ........................................................................................................ 1-71

1.11.6 ROL_W ........................................................................................................... 1-71

1.11.7 ROL_DW ........................................................................................................ 1-72

1.11.8 ROR_W........................................................................................................... 1-72

1.11.9 ROR_DW........................................................................................................ 1-73

1.12 Multiplexer blocks ........................................................................................... 1-74

1.12.1 MULTIPLX ...................................................................................................... 1-74

1.12.2 MUXn_I........................................................................................................... 1-74

1.12.3 MUXn_DI ........................................................................................................ 1-75

1.12.4 MUXn_R ......................................................................................................... 1-76

1.12.5 MUXn_BO....................................................................................................... 1-77

1.12.6 SEL_BO.......................................................................................................... 1-78

1.12.7 SEL_R............................................................................................................. 1-78

1.13 Counter blocks................................................................................................ 1-79

1.13.1 COUNTER ...................................................................................................... 1-79

1.13.2 CTU................................................................................................................. 1-79

1.13.3 CTD................................................................................................................. 1-80

1.13.4 CTUD.............................................................................................................. 1-81

1.14 Blocks for generating or processing pulses.................................................... 1-82

1.14.1 Pulse............................................................................................................... 1-82

1.14.2 TIMER_P ........................................................................................................ 1-82

1.14.3 R_TRIG........................................................................................................... 1-85

1.14.4 F_TRIG ........................................................................................................... 1-86

1.14.5 AFP................................................................................................................. 1-87

1.15 Blocks for acquiring or processing time intervals and timebases................... 1-88

1.15.1 TIME ............................................................................................................... 1-88

1.15.2 TIME ............................................................................................................... 1-88

1.15.3 TIME_BEG...................................................................................................... 1-89

1.15.4 TIME_END...................................................................................................... 1-89

1.16 Controller blocks ............................................................................................. 1-90

1.16.1 CONTROL ...................................................................................................... 1-90

1.16.2 CONT_C ......................................................................................................... 1-90

1.16.2.1 CONT_C: Block diagram ................................................................................ 1-96

1.16.3 CONT_S ......................................................................................................... 1-97

1.16.3.1 CONT_S: Block diagram .............................................................................. 1-101

1.16.4 PULSEGEN .................................................................................................. 1-102

1.16.4.1 PULSEGEN: Block diagram ......................................................................... 1-108

1.16.4.2 PULSEGEN: Three-step control................................................................... 1-108

1.16.4.3 PULSEGEN: Three-step control, asymmetrical ........................................... 1-110

1.16.4.4 PULSEGEN: Two-step control ..................................................................... 1-111

1.16.4.5 PULSEGEN: Manual operation in two- or three-step control ....................... 1-112

剩余133页未读，继续阅读

weixin_40452939

2018-07-26

CFC 功能块库中的常用模块,对于初学者来说打好基础知识非常必要，内容详细加以图形解释分析容易理解,感谢楼主提供

hill418

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请解释：static void fcfc_close(ControlS Con) { cfd_wclose(Con->Cfc, "End"); FreeMemory((void **) &Con->Cfc); }