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

More documents

Recommendations

Info

CHAPTER 3: USING THE SNAP ETHERNET I/O DRIVER TOOLKIT O22SnapIoMemMap C++ Class Examples The Driver Toolkit also includes the following examples, which use the core C++ code. See “Using Visual C++ with the Core C++ Code” on page 52 for more information. Environment Visual C++ 6 Linux Example Name Digital Bank Any rack with digital points Use with Description O22SnapIoStream C++ Class Examples The toolkit also includes the following examples, which use the core C++ code. See “Using Visual C++ with the Core C++ Code” on page 52 for more information. Environment Visual C++ 6 Digital Bank Console Any rack with digital points 54 SNAP Ethernet-Based I/O Units Protocols and Programming Guide Identical to the Visual C++ 6.0 ActiveX Digital Bank example, except that it uses the core C++ class, O22SnapIoMemMap, instead of the OptoSnapIoMemMapX ActiveX component. A simple Win32 console application. It takes one command-line parameter, an IP address, and prints out the state of the digital bank area of the Ethernet-based brain at that address. Eiocon Any rack Creates a small shell environment that lets a user issue commands to read and write to a brain. Eiocl Any rack A command line tool for reading or writing values to a brain. Can also process a file of commands. Useful as a standalone tool. Eiocon Any rack Creates a small shell environment that lets a user issue commands to read and write to a brain. Eiocl Any rack A command line tool for reading or writing values to a brain. Can also process a file of commands. Useful as a standalone tool. Example Name Eiocon Any brain with streaming turned on Linux Eiocon Any brain with streaming turned on Use with Description Identical to the Eiocon MemMap example shown above. Includes a mode (the “ls” command) for catching and printing stream packets. Identical to the Eiocon MemMap example shown above. Includes a mode (the “ls” command) for catching and printing stream packets.
MemMap Example Code CHAPTER 3: USING THE SNAP ETHERNET I/O DRIVER TOOLKIT This section gives a few examples of how to use the OptoSnapIoMemMapX ActiveX component to connect to and communicate with the Ethernet-based brain. The same principles would apply to the OptoSnapIoMemMap C++ class. All example code is written with Microsoft Visual Basic. The interesting code is in boldface. For more example code, see the example files listed in the previous section. Create the OptoSnapIoMemMapX Component Define a global instance of the component and create it in a function. For example: Public gBrain As OptoSnapIoMemMapX Sub Main() Set gBrain = New OptoSnapIoMemMapX End Sub Open a Connection to the Brain Use methods OpenEnet() and IsOpenDone() to create a connection to the brain. For example: Dim nResult As Long ' Attempt to open the brain... nResult = gBrain.OpenEnet("10.192.54.0", 2001, 10000, 1) ' Check the result If (nResult = SIOMM_OK) Then ' Keep calling IsOpenDone() until we succeed, time-out, or error nResult = gBrain.IsOpenDone() While (nResult = SIOMM_ERROR_NOT_CONNECTED_YET) ' let other tasks get some CPU DoEvents ' Check the status of the open operation nResult = gBrain.IsOpenDone() ' keep trying Wend End If Close the Connection to the Brain Use the Close () method. For example: gBrain.Close () SNAP Ethernet-Based I/O Units Protocols and Programming Guide 55
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: Environment Visual Basic 6 Internet
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

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?