Rockwell-automation 2708-NBD VBASIC Language Development Kit Manual de usuario descargar pdf (Pagina 79)

Appendix C

Application Library Subroutines

C–11

SineH! Returns the hyperbolic sine.

y! = SineH! ( x! )

FUNCTION SineH! ( x )

CosineH! Returns the hyperbolic cosine.

y! = CosineH! ( x! )

FUNCTION CosineH! ( x )

ArcTangentH! Returns the inverse hyperbolic tangent.

y! = ArcTangentH! ( x! )

FUNCTION ArcTangentH! ( x )

ArcSineH! Returns the inverse hyperbolic cosine for x = 0.

y! = ArcSineH! ( x! )

FUNCTION ArcSineH! ( x )

ArcCosineH! Returns the inverse hyperbolic cosine for principal

values.

y! = ArcCosineH! ( x! )

FUNCTION ArcCosineH! ( x )

1 2 ... 74 75 76 77 78 79 80 81 82 83 84

User Manual 1
Important User Information 2
Chapter 1 3
Chapter 2 3
Chapter 3 3
Special Devices 4
Chapter 5 5
Appendix B 5
Bulletin 2708 6
Table of Contents 6
Application Library 7
Subroutines 7
A-B VBASIC Limits 8
Introduction to BASIC 9
What is Visual BASIC ? 10
What is A-B VBASIC? 11
Developing and Running 12
The A-B VBASIC 13
Development Procedure 13
(cont’d) 13
Loading and Auto-Starting 14
Start-up Condition of 14
Termination of an 15
A-B VBASIC Program 15
A-B VBASIC 16
Run-Time Errors 16
Power Failure 17
CROSS-COMPILER (LXB) 18
Invoking the Compiler 19
Special Devices in A-B VBASIC 22
Introduction (cont’d) 23
Device: LCD Display 23
Device: Keypad 24
Device: Barcode Scanners 25
Device: Host Computer 27
Chapter 4 30
IF LOC(#1) 0 THEN 31
LINE INPUT #1, INLINE$ 31
‘ Do something else 31
Devices: Communication 32
Ports, Primary and 32
Auxiliary 32
Auxiliary (cont’d) 33
Device: RAM Files 34
Device: RAM Files (cont’d) 35
Device: Beeper 35
Device: Front Panel LEDs 35
Device: The #9 36
User Status Display 36
Device: The Egg Timer 37
Introduction 38
Using the Library 39
Using the Library (cont’d) 40
Writing Programs 40
Using the ENVPC Simulator 41
Appendix 47
Appendix A 48
Differences Between 49
A-B VBASIC and Visual BASIC 49
Supported A-B VBASIC 50
Keywords 50
CLOSE #1 51
EOF(filenumber) 54
GOTO {linelabel/linenumber} 57
HEX$(expression) 57
IF...THEN...ELSE 57
INT(numeric–expression) 58
IOCTL$([#]filenumber) 58
IOCTL[#]filenumber,string 58
KILL “filespec” 58
LOF(filenumber) 60
LTRIM$(stringexpression) 60
MKD$, MKI$, MKL$, MKS$ 60
RANDOMIZE expression 62
REM remark 62
‘ remark 62
SGN(numeric–expression) 64
SLEEP seconds 64
SOUND frequency,duration 64
SWAP vari1,vari2 66
TIME$ = stringexpression 66
OpenLINX 70
SUB OpenLINX 70
Appendix C 71
Appendix D 81
A-B BASIC Limits 81
ALLEN-BRADLEY 84

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