snap ethernet-based i/o units protocols and programming guide

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CHAPTER 3: USING THE SNAP ETHERNET I/O DRIVER TOOLKIT GetAnaPtReadArea V (ActiveX Only) [in] long nPoint [out] float pfValue [out] float pfCounts [out] float pfMinValue [out] float pfMaxValue GetAnaPtReadAreaEx [in] long nPoint [out] SIOMM_AnaPointReadArea pPointData ReadClearAnaPtMinValue V [in] long nPoint [out] float pfValue ReadClearAnaPtMaxValue V [in] long nPoint [out] float pfValue CalcSetAnaPtOffset V [in] long nPoint [out] float pfValue CalcSetAnaPtGain V [in] long nPoint [out] float pfValue Return values are shown on page 61. 68 SNAP Ethernet-Based I/O Units Protocols and Programming Guide Retrieves the specified point's value, counts, minimum value, and maximum value. Uses a structure to retrieve the specified point's value, counts, minimum value, and maximum value. Reads and clears the specified point's minimum value. Reads and clears the specified analog point's maximum value. Calculates, sets, and retrieves the specified analog point's offset. Calculates, sets, and retrieves the specified analog point's gain. v The OptoSnapIoMemMapX ActiveX component has a variant-only version of this method. SetAnaPtValue V [in] long nPoint [in] float fValue SetAnaPtCounts V [in] long nPoint [in] float fValue SetAnaPtTpoPeriod [in] long nPoint [in] float fValue Read Methods Description Write Methods Description Sets the specified analog point's value. Sets the specified analog point's counts. Sets the specified analog point’s TPO period in units of time in seconds. Valid range: 0.25 to 64 seconds, in 0.25 steps. v The OptoSnapIoMemMapX ActiveX component has a variant-only version of this method.
Analog Bank Methods CHAPTER 3: USING THE SNAP ETHERNET I/O DRIVER TOOLKIT Use the following methods to read and write information in the analog bank area of the memory map. For more information, see “Analog Bank Read—Read Only” on page 120, “Analog Bank Write—Read/Write” on page 120, and “IEEE Float Data” on page 43. Return values are shown on page 61. Status Methods Read Methods Description GetAnaBankValuesEx [out] SIOMM_AnaBank pBankData GetAnaBankCountsEx [out] SIOMM_AnaBank pBankData GetAnaBankMinValuesEx [out] SIOMM_AnaBank pBankData GetAnaBankMaxValuesEx [out] SIOMM_AnaBank pBankData Retrieves the values of the entire analog bank. Retrieves the counts of the entire analog bank. Retrieves the minimum values of the entire analog bank. Retrieves the maximum values of the entire analog bank. Write Methods Description SetAnaBankValuesEx [in] SIOMM_AnaBank pBankData SetAnaBankCountsEx [in] SIOMM_AnaBank pBankData Sets the values of the entire analog bank. Sets the counts of the entire analog bank. Use the following methods to read from the status area of the brain. For more information about the status area of the memory map, see “Status Area Read—Read Only” on page 105. Read Methods Description GetStatusVersion V (ActiveX Only) [out] long pnMapVer [out] long pnLoaderVersion [out] long pnKernelVersion GetStatusVersionEx (C++ Class Only) [out] SIOMM_StatusVersion pVersionData GetStatusHardware V (ActiveX Only) [out] long pnIoUnitType [out] byte pbyHwdVerMonth [out] byte pbyHwdVerDay [out] short pwHwdVerYear [out] long pnRamSize Retrieves version information about the SNAP brain's memory map, loader, and kernel. Same as GetStatusVersion, except this method uses a structure. Retrieves hardware information about the SNAP brain's unit type, hardware revision date, and quantity of bytes of installed RAM. SNAP Ethernet-Based I/O Units Protocols and Programming Guide 69
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SNAP ETHERNET-BASED I/O UNITS PROTO
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Table of Contents Chapter 1: Introd
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Non-velocity Algorithms............
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Disconnecting......................
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Data Logging Configuration—Read/W
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Chapter 1 Introduction CHAPTER 1 We
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About this Guide CHAPTER 1: INTRODU
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For Help CHAPTER 1: INTRODUCTION If
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FEATURE CHAPTER 1: INTRODUCTION Ema
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CHAPTER 1: INTRODUCTION This task C
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CHAPTER 2 Chapter 2 Overview of Pro
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Referencing SNAP I/O Points CHAPTER
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Analog and Digital Systems (N Brain
Page 27 and 28: Digital-Only Systems The following
Page 29 and 30: I/O Point Types CHAPTER 2: OVERVIEW
Page 31 and 32: CHAPTER 2: OVERVIEW OF PROGRAMMING
Page 33 and 34: Watchdog (Digital and Analog Points
Page 45 and 46: Streaming Data CHAPTER 2: OVERVIEW
Page 47 and 48: Logging Data Area Number of Bytes I
Page 49 and 50: Using PID Loops What is a PID? CHAP
Page 51 and 52: Equations Common to All Algorithms
Page 55 and 56: CHAPTER 3 Chapter 3 Using the SNAP
Page 57 and 58: CHAPTER 3: USING THE SNAP ETHERNET
Page 63 and 64: Environment Visual Basic 6 Internet
Page 65 and 66: MemMap Example Code CHAPTER 3: USIN
Page 71 and 72: Return Values CHAPTER 3: USING THE
Page 73 and 74: IsOpenDone V Close V Return Values
Page 75 and 76: Digital Point Methods CHAPTER 3: US
Page 77: SetDigBankOnMask V [in] long nPts63
Page 81 and 82: GetStatusWatchdogTime [out] long pn
Page 87 and 88: GetLastStreamStandardBlock (ActiveX
Page 89 and 90: CHAPTER 4 Chapter 4 Using the IEEE
Page 91 and 92: CHAPTER 4: USING THE IEEE 1394-BASE
Page 93 and 94: Bytes 0-3 Bytes 4-7 Bytes 8-11 Byte
Page 95 and 96: Bytes 0-3 Bytes 4-7 Bytes 8-11 The
Page 97 and 98: Bytes 0-3 Bytes 4-7 Bytes 8-11 Byte
Page 99 and 100: Read and clear latches for individu
Page 101 and 102: Scaling CHAPTER 4: USING THE IEEE 1
Page 103 and 104: Read and Write Packet Structure Par
Page 109 and 110: CHAPTER 5 Chapter 5 Advanced Modbus
Page 111 and 112: CHAPTER 5: ADVANCED MODBUS PROGRAMM
Page 113 and 114: APPENDIX A Appendix A SNAP Ethernet
Page 115 and 116: Status Area Read—Read Only This i
Page 117 and 118: Date and Time Configuration—Read/
Page 119 and 120: Security Configuration—Read/Write
Page 121 and 122: Serial Module Configuration—Read/
Page 123 and 124: Wiegand Serial Module Configuration
Page 125 and 126: SNMP Configuration—Read/Write (Do
Page 127 and 128: Starting Address Length Type Descri
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Starting Address Length Type Descri
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Digital Point Read—Read Only NOTE
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Analog Point Read—Read Only See
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Analog and Digital Point Configurat
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Digital Events and Reactions—Read
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Analog Point Calculation and Set—
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Analog Read and Clear/Restart—Rea
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Serial Event Configuration—Read/W
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Data Log—Read/Write (Does not app
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Appendix B Table of Offsets Introdu
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Module Point (Decimal) Point (Hex)
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Index A access, setting up SNMP sec
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error codes IEEE 1394-based protoco
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O off-latch, 20 offset, 24 IEEE 139
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