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

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CHAPTER 3: USING THE SNAP ETHERNET I/O DRIVER TOOLKIT SetScratchPadBitArea [in] long nBits63to32 [in] long nBits31to0 SetScratchPadBitAreaMask [in] long nOnMask63to32 [in] long nOnMaskPts31to0 [in] long nOffMask63to32 [in] long nOffMaskPts31to0 Return values are shown on page 61. Write Methods Description SetScratchPadIntegerArea (ActiveX only) [in] short nStartIndex [in] short nLength [in] O22_SIOMM_ScratchPadIntegerBlock pBlock SetScratchPadIntegerArea (C++ only) [in] long nStartIndex [in] long nLength [in] l_array pnData SetScratchPadFloatArea (ActiveX only) [in] short nStartIndex [in] short nLength [in] O22_SIOMM_ScratchPadFloatBlock pBlock SetScratchPadFloatArea (C++ only) [in] long nStartIndex [in] long nLength [in] f_array pfData SetScratchPadStringArea [in] short nStartIndex [in] short nLength [in] O22_SIOMM_ScratchPadStringBlock pBlock SetScratchPadStringAreaBin (ActiveX only) [in] short nStartIndex [in] short nLength [in] O22_SIOMM_ScratchPadStringBlock pBlock 74 SNAP Ethernet-Based I/O Units Protocols and Programming Guide Sets the state of the Scratch Pad bit area. Sets the state of the Scratch Pad bit area. Bits in the on mask are turned on and bits in the off mask are turned off. All other bits are unaffected Writes a block of up to 256 integers to the Scratch Pad integer area. nLength is the number of integers to write and must be between 1 and 256. Writes a block of up to 256 integers to the Scratch Pad integer area. nLength is the number of integers to write and must be between 1 and 256. Writes a block of up to 256 floats to the Scratch Pad float area. nLength is the number of floats to write and must be between 1 and 256. Writes a block of up to 256 floats to the Scratch Pad float area. nLength is the number of floats to write and must be between 1 and 256. Writes a block of up to 8 strings to the Scratch Pad string area. In the ActiveX version, use this method when the strings contain text. nLength is the number of strings to write and must be between 1 and 8. Writes a block of 8 strings to the Scratch Pad string area. For use when the strings contain binary data. nLength is the number of strings to write and must be between 1 and 8.
CHAPTER 3: USING THE SNAP ETHERNET I/O DRIVER TOOLKIT Memory Map Read/Write Methods If you need to read or write to areas of the memory map that are not yet supported by the driver toolkit, for example to configure timers or event messages, use the following methods. For more information on the memory map, see Appendix A. For the address offset, ignore the first four F’s in the memory map address (for example, use F03FFFD0, not FFFFF03FFFD0). Read Methods Description ReadLong V [in] long nOffset [out] long pnValue ReadFloat V [in] long nOffset [out] float fValue ReadBlock [in] long nOffset [out] by_array byBlock [in] short nLength Reads a long integer value from a memory address offset in the brain. Reads a float value from a memory address offset in the brain. Reads a block of bytes from a memory address offset in the brain. Use the GetLongAtBlockIndex() and GetFloatAtBlockIndex() methods below to help read data from the block of bytes. v The OptoSnapIoMemMapX ActiveX component has a variant-only version of this method. Write Methods Description WriteLong V [in] long nOffset [in] long nValue WriteFloat V [in] long nOffset [in] float fValue WriteBlock [in] long nOffset [in] by_block byBlock [in] short nLength Writes a long integer value to a memory address offset in the brain. Writes a float value to a memory address offset in the brain. Writes a block of bytes to a memory address offset in the brain. Use the SetLongAtBlockIndex() and SetFloatAtBlockIndex() methods below to help fill in the block of bytes with data. v The OptoSnapIoMemMapX ActiveX component has a variant-only version of this method. The following methods help to get and set integer and float values in byte blocks. They are helpful when using the WriteBlock and ReadBlock methods described in the previous table. Block Helper Methods Description GetLongAtBlockIndex [in] by_array byBlock [in] short nIndex [out] long pnValue GetFloatAtBlockIndex [in] by_array byBlock [in] short nIndex [out] float pfValue Retrieves a long value at the given index in the given byte array. Retrieves a float value at the given index in the given byte array. SNAP Ethernet-Based I/O Units Protocols and Programming Guide 75
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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
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Digital-Only Systems The following
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I/O Point Types CHAPTER 2: OVERVIEW
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CHAPTER 2: OVERVIEW OF PROGRAMMING
Page 33 and 34: Watchdog (Digital and Analog Points
Page 35 and 36: CHAPTER 2: OVERVIEW OF PROGRAMMING
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 and 78: SetDigBankOnMask V [in] long nPts63
Page 79 and 80: Analog Bank Methods CHAPTER 3: USIN
Page 81 and 82: GetStatusWatchdogTime [out] long pn
Page 83: CHAPTER 3: USING THE SNAP ETHERNET
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
Page 129 and 130: Starting Address Length Type Descri
Page 131 and 132: Digital Point Read—Read Only NOTE
Page 133 and 134: 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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Starting Address Length Type Descri
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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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