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

More documents

Recommendations

Info

CHAPTER 3: USING THE SNAP ETHERNET I/O DRIVER TOOLKIT Create the OptoSnapIoStreamX Component Define a global instance of the component and create it in a function. For example: Public WithEvents gBrain As OptoSnapIoStreamX Sub Main() Set gBrain = New OptoSnapIoStreamX End Sub Open a Connection to the Brain Use the OpenStreaming() method to prepare for listening to stream packets. For example: Dim nResult As Long ' Open for standard streaming nResult = gBrain.OpenStreaming(1, 0, PortNumberEdit.Text) ' Check for error If (nResult SIOMM_OK) Then HandleError (nResult) End If Start Listening to a Brain Use the StartStreamingListening() method to start listening for stream packets from the specified brain. For example: ' Start listening If (nResult = SIOMM_OK) Then nResult = gBrain.StartStreamListening("10.20.30.40", 2000) End If Handle Stream Events Use the OnStreamEvent() event to handle caught stream packets. For example: Private Sub gBrain_OnStreamEvent(ByVal nIpAddress As Long, ByVal nStatus As Long) Dim nResult As Long ' Check the status of the event If (nStatus SIOMM_OK) Then ' A timeout is the most likely error HandleError (nStatus) Else 58 SNAP Ethernet-Based I/O Units Protocols and Programming Guide
CHAPTER 3: USING THE SNAP ETHERNET I/O DRIVER TOOLKIT Dim StreamBlock As SIOMM_StreamStandardBlock ' Get the last stream block nResult = gBrain.GetLastStreamStandardBlockEx(StreamBlock) If (nResult = SIOMM_OK) Then ' If no error, do something with the data Else ' Check the result HandleError (nResult) End If End If End Sub Stop Listening and Clean Up Use the StopStreamListening() and CloseStreaming() methods to clean up. For example: ' Stop listening nResult = gBrain.StopStreamListening("10.20.30.40") ' Close the connection nResult = gBrain.CloseStreaming() Interface Introduction Here are the interfaces for the ActiveX components and C++ classes. Since the interfaces are very similiar and the components may be used from different languages, the information is presented in a general format. Basic Data Types The following data types are used. They may have different names in different languages. byte: 8-bit signed integer short: 16-bit signed integer long: 32-bit signed integer string: string float: 32-bit float by_array: an array of bytes l_array: an array of long integers f_array: an array of floats SNAP Ethernet-Based I/O Units Protocols and Programming Guide 59
Page 1 and 2:
SNAP ETHERNET-BASED I/O UNITS PROTO
Page 3 and 4:
Table of Contents Chapter 1: Introd
Page 5 and 6:
Non-velocity Algorithms............
Page 7 and 8:
Disconnecting......................
Page 9 and 10:
Data Logging Configuration—Read/W
Page 11 and 12:
Chapter 1 Introduction CHAPTER 1 We
Page 13 and 14:
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 and 66: MemMap Example Code CHAPTER 3: USIN
Page 67: CHAPTER 3: USING THE SNAP ETHERNET
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
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:
Page 131 and 132:
Digital Point Read—Read Only NOTE
Page 133 and 134:
Analog Point Read—Read Only See
Page 135 and 136:
Analog and Digital Point Configurat
Page 137 and 138:
Digital Events and Reactions—Read
Page 139 and 140:
Page 141 and 142:
Analog Point Calculation and Set—
Page 143 and 144:
Analog Read and Clear/Restart—Rea
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Serial Event Configuration—Read/W
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Data Log—Read/Write (Does not app
Page 159 and 160:
Appendix B Table of Offsets Introdu
Page 161 and 162:
Module Point (Decimal) Point (Hex)
Page 163 and 164:
Index A access, setting up SNMP sec
Page 165 and 166:
error codes IEEE 1394-based protoco
Page 167 and 168:
O off-latch, 20 offset, 24 IEEE 139
show all

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

Create successful ePaper yourself

Delete template?

Save as template?