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

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CHAPTER 3: USING THE SNAP ETHERNET I/O DRIVER TOOLKIT Configure Points Use the SetPtConfiguration() method to configure points. See “I/O Point Types” on page 19 for SNAP point type values. Dim nResult As Long ' Digital In nResult = gBrain.SetPtConfiguration(0, &H100&, 1, 0, 0, 0, 0) If (nResult SIOMM_OK) Then HandleError (nResult) Exit Sub End If ' Digital Out nResult = gBrain.SetPtConfiguration(4, &H180&, 0, 0, 0, 0, 0) If (nResult SIOMM_OK) Then HandleError (nResult) Exit Sub End If ' Analog Out (SNAP-AOV25) nResult = gBrain.SetPtConfiguration(8, &HA5&, 0, 0, 0, 0, 10) ' AOV25 If (nResult SIOMM_OK) Then HandleError (nResult) Exit Sub End If ' Analog In (SNAP-AIV) nResult = gBrain.SetPtConfiguration(12, &H6&, 0, 0, 0, 0, 20) ' AIV If (nResult SIOMM_OK) Then HandleError (nResult) Exit Sub End If ' Update the error display HandleError (nResult) 56 SNAP Ethernet-Based I/O Units Protocols and Programming Guide
CHAPTER 3: USING THE SNAP ETHERNET I/O DRIVER TOOLKIT Set an Output Based on an Input This example shows how to read and write analog and digital points. It sets a digital output based on a digital input point. It does the same for analog points. Dim nResult As Long Dim nPtState As Long Dim nPtValue As Single ' Get the state of digital input nResult = gBrain.GetDigPtState(nDigInPoint, nPtState) ' if no error, set the digital output If (nResult = SIOMM_OK) Then nResult = gBrain.SetDigPtState(nDigOutPoint, nPtState) End If ' Deal with any errors and update the error display Call HandleError(nResult) ' Get the value of the analog input nResult = gBrain.GetAnaPtValue(nAnaInPoint, nPtValue) ' if no error, set the analog output If (nResult = SIOMM_OK) Then nResult = gBrain.SetAnaPtValue(nAnaOutPoint, nPtValue) End If ' Deal with any errors and update the error display Call HandleError(nResult) Streaming Example Code This section gives a few examples of how to use the OptoSnapIoStreamX ActiveX component to listen for and process stream packets from a brain. The same principles apply to the OptoSnapIoStream C++ class. All example code is written with Microsoft Visual Basic. The interesting code is in boldface. For more example code, see the files listed in “Examples Included” on page 52. SNAP Ethernet-Based I/O Units Protocols and Programming Guide 57
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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............
Page 7 and 8:
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
Page 15 and 16: For Help CHAPTER 1: INTRODUCTION If
Page 17 and 18: FEATURE CHAPTER 1: INTRODUCTION Ema
Page 19 and 20: CHAPTER 1: INTRODUCTION This task C
Page 21 and 22: CHAPTER 2 Chapter 2 Overview of Pro
Page 23 and 24: Referencing SNAP I/O Points CHAPTER
Page 25 and 26: 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: 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 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
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Date and Time Configuration—Read/
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Security Configuration—Read/Write
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Serial Module Configuration—Read/
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Wiegand Serial Module Configuration
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SNMP Configuration—Read/Write (Do
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Starting Address Length Type Descri
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Page 131 and 132:
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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Page 141 and 142:
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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