MATLAB XPC TARGET RELEASE NOTES Guide de l'utilisateur Page 521
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Noté. / 5. Basé sur avis des utilisateurs
xPC Target o ptio ns Pane
Signal logging data buffer size in doubles
Enterthemaximumnumberofsamplepointstosavebeforewrapping.
Settings
Default: 100000
Themaximumvalueforthisoptioncanbenomorethantheavailabletarget
PC memory, which the xPC Target software also uses to hold other items.
Tips
• Target applications use this buffer to store the time, states, outputs, and
task execution time logs a s defined in the Simulink model.
• The maximum value for th is option derives f rom available target PC
memory, which the x PC Target software also uses to hold other items. For
example, in addition to signal logging d ata,thesoftwarealsousesthetarget
PC memory for the xPC Target kernel, target application, and scopes.
For example, ass ume the model
my_xpc_osc2.mdl has six d ata item s (on e
time, two states, two outputs, and one task execution time (T ET)). If you
enter a buffer size of
100000, the target object property tg.MaxLogSamples
is calculated as floor(100000) / 6) = 16666. After saving 16666 sample
points, the buffer wraps and further samples overwrite the older ones.
• If you enter a logging buffer size larger than the available R AM on the
target PC, after downloading a nd initializing the target application, the
target PC displays a message,
ERROR: allocation of logging memory
failed
. In this case you need to install more R AM or reduce the buffer size
for logging. In any case you m ust reboot the target PC. To calculate the
maximum buffer size you might have for you target application logs, divide
the amount of available R AM on your target PC by 8. Enter that value for
the Signal logging data buffer size in doubles value.
Command-Line Information
Param ete r: RL32LogBufSizeModifier
Type: string
Value:
'100000' | any vali d memory size
19-23
- User’s Guide 1
- 508-647-7000 (Phone) 2
- 508-647-7001 (Fax) 2
- The MathWorks, Inc 2
- 3 Apple Hill Drive 2
- Natick, MA 01760-2098 2
- Revision History 3
- Working wi 8
- Graphical User Interfaces 10
- Execution Modes 10
- Environment 11
- Vector CANape Support 11
- Frequently Asked Questions 12
- Function Reference 14
- Functions 15
- Configuration Parameters 15
- Contents 16
- Target and Scope O bjects 17
- Target Objects 18
- Scope Objects 19
- 1 Target and Scop e Objects 20
- • TriggerS lope 23
- See the scope object function 23
- Targets and Scopes in the 25
- MATLAB Interface 25
- Working with Tar get Objects 26
- Deleting Target Objects 27
- Displaying Tar g 28
- Working with Target Ob jects 29
- Working with Scope Objects 31
- Pretriggering (P<0) 41
- Posttriggering (P>0) 42
- Acquisition of Gap-Free Data 44
- Signals and Parameters 49
- Monitoring Signals 50
- Mo del Hierarchy node 55
- Creating Scopes 65
- Target Scopes 67
- Scope 1 67
- Scope 2, click the xPC Target 69
- Scope 2. (Note that 69
- Start the scop 73
- Scope 2, right-click Scope 75
- Software Triggering Scopes 77
- Copying Files to the Host PC 83
- TargetPC1 85
- Scope of Type File 99
- 3 Signals and Parameters 100
- Signal Tracing 101
- Signal Logging 105
- Hierarchy 115
- 7 Press the Enter key 117
- 800 and click OK 123
- Inlined Parameters 127
- 10 Click Apply ,thenclickOK 129
- 11 In th 129
- Signal Generator 131
- Booting from a DOS Device 135
- DOSLoader Mode 136
- Restrictions 137
- 4 Bo oting from a DOS Device 138
- Creating a DOS System Disk 140
- Embedded Option 141
- Introduction 142
- 5 Embedded Option 144
- Embedded Option Setup 147
- Stand-Alone Target Setup 148
- Updating Enviro 149
- Software Environment and 153
- Target PCs 154
- Explorer 155
- Settings 157
- 1MB, 4MB,or16 158
- Appearance 158
- 1 In the MATLAB window, type 159
- 2 In the MATLAB window, type 159
- Working with Target PC 165
- Environments 165
- Properties 167
- To check your changes, type 170
- Alternatively, you can type 171
- Using the Target PC 173
- Command-Line Interface 173
- Target PC 175
- Files and File Systems 181
- methods for both 184
- Using xpctar get.ftp Objects 185
- Using xpctarget.ftp Objects 187
- Using xpctar get.fs Objects 189
- Using xpctarget.fs Objects 191
- 10 Graphical User Interfaces 200
- From xPC Target Block 203
- Marking Block Parameters 205
- Marking Block Signals 207
- Interface 211
- Web Browser Interface 212
- Disconnect 213
- Using the Main Pa 217
- Changing WWW Properties 219
- 4 Click OK 222
- Introducing Execution Modes 224
- Interrupt M ode 225
- 12 Execution Modes 226
- Polling Mode 227
- Setting the Polling Mode 229
- -axpcCPUClockPoll=1200 231
- -axpcCPUClockPoll=0 231
- Target Application 233
- Within a Model 235
- Polling M o de 237
- Incorporating Fortran 239
- Code into the xPC Target 239
- Before You Start 240
- Prerequisites 241
- In This Example 243
- Compiling Fortran Files 245
- SimStruct) 246
- Vector CANape S upport 255
- Vector CANape 256
- - tg.start 257
- - tg.stop 257
- 14 Vector CANape 258
- Software 259
- Event Mode Data Acquisition 265
- Over view 268
- BIOS Settings 269
- Booting Issues 270
- - BOOTSECT.RTT 270
- - XPCTGB1.RTA 270
- Is the Target PC Halted? 271
- Communications 272
- 15 Frequently Asked Questions 274
- Communication Issues? 275
- - ReadFile Err or: 6 280
- - Reinstall the software 280
- 2 At the MATLAB prompt, type 281
- Troubleshooting Build Issues 285
- - States 293
- - Output 293
- - Final sta 293
- - Signal lo 293
- Partitions? 299
- 2^(n-1) 301
- Refer to the Documentation 303
- Target PC Command-Line 305
- Interface Reference 305
- Target PC Commands 306
- Scope Object Methods 308
- Software Environment 314
- Open xPC Target Explorer 315
- 17 Function Reference 316
- Target Application Objects 317
- File and File System Objects 320
- Add (env c olle ction object) 326
- Purpose Create scopes 327
- Syntax MATLAB command line 327
- Arguments 327
- ,targ et_PC_dir) 332
- Purpose Remove target obje ct 334
- ,file_ID) 339
- See Also set (env object) 362
- The target object methods 372
- The built-in MATLAB functions 372
- NumSamples 387
- Item (env collection object) 406
- Syntax file=readxpcfile(data) 414
- Purpose Reboot target PC 416
- Signals updated 422
- MaxModelSize 431
- See Also get (env object) 438
- CommunicationTimeOut 450
- 'Normal' 450
- OutputLog changes 450
- SampleTime 450
- NewValues: {[10] [100]} 454
- The scope object method 468
- See Also xpctarget.xpc 475
- Property 486
- , delete,andtarge tping 490
- Argument 493
- 19 Configuration Parameters 500
- Command-Line Information 503
- See Also 503
- Specify target PC name 505
- Dependencies 507
- Execution mode 509
- I/O board genera 511
- Allow tasks to ex 515
- Log Task Executi 517
- Include model hi 525
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