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LNS Programmer's Guide
39
LNS Application and LNS Server PC
LONWORKS Channel
LONWORKS
Device
LONWORKS
Device
LONWORKS
Device
LONWORKS
Device
LONWORKS
Device
Figure 3.4 Network Communication as a Local Client
Lightweight Client Applications
Lightweight client applications run on a different PC than the LNS Server and the LNS
database. The remote PC is connected to the LNS Server PC via TCP/IP sockets, as
shown in figure 3.5.
LNS Server PC
LONWORKS Channel
LONWORKS
Device
LONWORKS
Device
LONWORKS
Device
LONWORKS
Device
LNS Application PC (Lightweight Client)
Figure 3.5 Network Communication as a Remote Lightweight Client
Remote Lightweight client applications must have regular contact with the LNS Server.
A Lightweight client application will be disconnected from the LNS Server if the TCP/IP
connection is broken. A Lightweight client application cannot perform monitor and
control operations if the connection to the LNS Server is lost, because both the
- LNS Programmer's Guide 1
- Preface 3
- Purpose 4
- Audience 4
- Examples 4
- Technical Support 4
- Development System 5
- LNS Remote Client PC 6
- Table of Contents 7
- Software 15
- System Requirements 16
- Party Software 16
- Chapter 2 - What’s New in 19
- Turbo Edition 19
- Performance Enhancements 20
- New Features 20
- Enhanced Data Formatting 21
- GetDataPoint Method 21
- FormatLocales Collection 21
- Using Permanent Monitor Sets 25
- Using Temporary Monitor Sets 26
- Miscellaneous 31
- Compatibility 32
- Interface Compatibility 33
- Database 33
- Runtime Component Updates 33
- Exception Codes 34
- Dynamic Functional Blocks 35
- Formatting Enhancements 36
- Flexible Program ID 37
- NV Type Management 39
- Security 40
- Chapter 3 - LNS Overview 41
- Introduction to LNS 42
- The LNS Programming Model 43
- LNS Components 44
- LNS Object Server 45
- LNS Object Server Hierarchy 46
- ConnectDescTemplate 48
- NetworkVariable 48
- Network Service Devices 49
- Network Interfaces 49
- LNS Network Services 50
- LNS Clients 51
- Local Client Applications 52
- ONWORKS Channel 53
- Full Client Applications 54
- Getting Started 55
- ONWORKS network 57
- Chapter 4 - Programming an 59
- LNS Application 59
- Selecting the Access Mode 63
- Opening the Object Server 64
- Opening a Network 65
- Specifying the License Mode 67
- Dim MyNetwork as LcaNetwork 74
- Opening a System 75
- ONWORKS/IP channels 76
- Setting System Parameters 77
- Managing Transactions 79
- Monitoring and Transactions 80
- Event Handling 81
- Exception Handling 84
- Chapter 5 - Network 87
- Management : Installing a 87
- Network 87
- Installation Scenarios 89
- Engineered Mode Installation 90
- Ad Hoc Installation 90
- Engineered Mode 91
- Commissioning Phase 95
- Automatic Installation 103
- Installing Devices 107
- Tracking Device Updates 113
- Chapter 6 - Network 117
- Management: Defining 117
- Commissioning and 117
- Connecting Devices 117
- Device Interfaces 118
- ONWORKS application 120
- Device Resource Files 121
- Scope Selectors 122
- ONMARK Interoperability 123
- The Bigger Picture 124
- SFPTnodeObject 125
- UFPTcooker 125
- Creating AppDevice Objects 127
- Neuron ID Assignment 129
- Service Pin 129
- Find and Wink 131
- Manual Entry 133
- Post-Load State 134
- Commissioning Devices 135
- Device Validation Options 137
- LNS Licensing Considerations 138
- Configuring Devices 139
- Generic Configuration Data 139
- Setting Devices Online 142
- Using the OnAttachment Event 144
- Replacing Devices 146
- Upgrading Devices 148
- Decommissioning Devices 150
- Channels 151
- Removing Devices 151
- Connection Rules 154
- Device One 155
- Device Two 155
- Adding Connections 156
- Modifying Connections 157
- Mirrored Connections 158
- Connection Descriptions 159
- Chapter 7 - Network 161
- Management: Optimizing 161
- Connection Resources 161
- Network Design Time 166
- Alias Options 166
- Broadcast Options 167
- Shortage of Groups 171
- Shortage of Aliases 172
- Predictive Strategies 173
- Conclusion 175
- Chapter 8 - Network 177
- Management: Advanced 177
- Remote Full Clients 179
- Using the PreReplace Method 180
- Using Shared Media 181
- ONWORKS router 186
- Installation Order 189
- Channel Isolation Process 190
- Removing Routers 192
- Accessing a Device Interface 193
- ConfigProperties 194
- ConfigPropertiesAvailable 194
- DynamicLonMarkObjectCapacity 194
- DynamicMessageTags 194
- LonMarkObjects 194
- MaxNVSupported 195
- MessageTags 195
- NetworkVariables 195
- StaticNVCount 195
- Chapter 9 - Monitor and 203
- Control 203
- ONWORKS network, data can 204
- Permanent Monitor Sets 206
- Temporary Monitor Sets 207
- Creating Monitor Sets 208
- Managing Monitor Sets 209
- Setting Monitoring Options 214
- NvMonitorOptions Object 216
- Authentication 217
- GenerateInitialFetch 217
- PollInterval 217
- Priority 218
- ReportByException 218
- ResetPollingIfUpdated 219
- Retries 219
- ServiceType 220
- UseAsyncSend 221
- SuppressPollingIfBound 221
- ThrottleInterval 221
- UseBoundUpdates 222
- MsgMonitorOptions Object 223
- FilterByCode 224
- FilterBySource 224
- FilterCode 224
- Using the Enable Method 227
- Setting the Poll Interval 232
- Scenario 235
- Fan-in Connections 235
- Using Message Monitor Points 238
- Controlling Message Points 241
- Application 247
- Data Source Options 250
- MyDataPoint.Write() 253
- Performance Considerations 254
- Data Formatting 255
- CurrentFormatLocale 258
- (1) value, which causes 261
- Chapter 10 - LNS Database 263
- Management 263
- Overview of LNS Databases 264
- Automatic Database Upgrade 264
- Backing Up Network Databases 265
- Validating Network Databases 266
- Validate Method 267
- Special Considerations 268
- Removing Network Databases 269
- Moving Network Databases 270
- Network Recovery 271
- 5. Open the system 274
- Application-Level Recovery 276
- Chapter 11 - LNS Network 279
- Interfaces 279
- Network Interfaces Overview 280
- ONWORKS Plug 'n 281
- Addressing 283
- LonTalk Transactions 283
- Number of Groups 284
- Neuron Ids 284
- Using xDriver Interfaces 285
- Using LONWORKS/IP Interfaces 286
- ONWORKS/IP interface 289
- Chapter 12 - Director 291
- Applications and Plug-Ins 291
- ONWORKS network, or 292
- LNS Plug-In API 293
- Registering Plug-Ins 293
- Accessing Extension Data 294
- Detecting Existing Plug-Ins 296
- Implementing an LNS Plug-In 302
- Chapter 13 - LNS Licensing 303
- Demonstration Mode 305
- Standard Mode 305
- Entering the Standard Mode 306
- Protecting Your Keys 306
- Viewing License Status 306
- Tracking License Events 307
- License Event Types 307
- ONWORKS 308
- Testing Devices 309
- Applications 315
- Using setup.exe 321
- Using _SetupLNS.dll 324
- Chapter 15 - Advanced Topics 327
- File Transfer 328
- Developing Remote Tools 330
- Developing Mobile Tools 331
- Debugging LNS Applications 334
- Dim MyBuzzer As LcaAppDevice 335
- Appendix A - Deprecated 337
- Methods and Obsolete Files 337
- Deprecated Objects 338
- Deprecated Methods 338
- Deprecated Properties 339
- Obsolete Files 340
- Appendix B – LNS, MFC and 343
- LNS, MFC and ATL 344
- Example Application Suite 351
- Network Management Example 352
- Initializing a Network 353
- ONWORKS network interfaces 354
- ONWORKS/IP Server 356
- Source Code Mappings 358
- Monitor and Control Example 360
- Example Director Application 365
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