Measurement-computing Data Acquisition Systems rev.10.4 Manual de usuario Pagina 264
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4.5-34 Daq API Command Reference 908794 Programmer’s Manual
daqIOWrite
Also See: daqIORead, daqIOReadBit, daqIOWriteBit
.
Format
daqIOWrite(handle, devType, devPort, whichDevice, whichExpPort, value)
Purpose
daqIOwrite writes to the specified port on the selected device.
Parameter Summary
Parameter Type Description
handle DaqHandleT
Handle to the device to perform the IO write
devType DaqIODeviceType
IO device type
devPort DaqIODevicePort
IO device port selection
whichDevice DWORD
IO device instance to write from
whichExpPort DaqIOExpansionPort
IO device expansion port to write from
value DWORD
Pointer to IO value to write
Parameter Values
handle: obtained from the daqOpen function
devType: see table below
devPort: see table below
whichDevice: valid values range from 0 to 171
whichExpPort: see table below
value: valid values range from 0 to 65,535
Parameter Type Definitions
devType–(DaqIODeviceType)
Definition Description
DiodtLocalBitIO
P2 – Local addressing by bit
DiodtLocal8255
P2 – Local addressing on DaqBook/2000 Series, DaqBoard/2000 Series and cPCI
DaqBoard/2000c Series Devices
DiodtP2Local8
P2 – Local addressing by byte
DiodtP3LocalDig16
P3 – Local addressing for HS 16-bit Dig I/O
DiodtP3LocalCtr16
P3 – Local addressing of 16-bit counters
DiodtP2Exp8
P2 – Expansion addressing by byte
DiodtExp8255
DBK20, DBK21
DiodtDbk23
DBK23
DiodtDbk24
DBK24
DiodtDbk25
DBK25
DiodtWbk17
WBK17
- *372195A-01* 1
- How to use this Manual 3
- 908494 Programmer’s Manual 4
- Table of Contents 5
- Introduction 1 7
- Language Support 8
- Driver Installation 9
- 908494 Programmer’s Manual 10
- Data Acquisition Environment 11
- Signal Environment 12
- 988594 Programmer’s Manual 14
- For x% = 0 To 3 30
- 0, 0, x%, bitVal&) 30
- Next x% 30
- Zero Compensation 33
- Linear Conversion 35
- End Sub 36
- Using Multiple Devices 3 37
- Internal Clock Method 40
- Master Clock Method 41
- External Clock Method 43
- Overview 45
- 938395 Programmer’s Manual 46
- Mask and Flag Definitions 50
- 961 962 963 ... 999 59
- 941 942 ... 958 959 960 59
- Raw Data Formats 81
- Setting the Scan Rate 89
- Scan Rate Mode 89
- Scan Rate State 90
- Actual Scan Rate 90
- 94
- DBK16-Read Offset Trimpot 95
- DBK43-Read Offset Trimpot 96
- Typical flags Settings 100
- Settings 101
- Prototypes 102
- Program References 102
- Function Usage 104
- Visual BASIC 105
- Returns 114
- Data Transfer Progress 115
- Example Acquisition States 116
- DazcNone 124
- DazcAutoZero 124
- Parameter Type Description 129
- Definition Description 129
- Purpose 131
- Offset value to apply 142
- Parameter Values 144
- parameters 148
- Parameter Summary 150
- Parameter Type Definitions 150
- Moving Averages 160
- Definition Description 165
- Using Thermocouples (T/Cs) 172
- T/C Gains Settings 173
- Daq/2000 Series devices* 174
- Setting the Output Mode 184
- Buffer Management 201
- DAC0 DAC1 DAC2 DAC3 P3 DO 202
- DAC0 DAC2 P3 DO 202
- Note 1: 206
- Offset for header in bytes 208
- Update Cycle Data Blocks 211
- Update/Sample Data Format 212
- Output From File Operation 212
- DaqBoard/2000c Series 219
- Setting the DAC Value 227
- 908794 Programmer’s Manual 232
- (continued) 249
- DdiProtocolInfo 251
- DdiExtFeatures 251
- Local I/O 262
- Expansion I/O 262
- Local I/O 266
- 957193 Programmer’s Manual 280
- (for 14 sample settings 282
- 2, 4, 8, 16, 32, 64 282
- 128, etc. up to 16384) 282
- Option Value (optionValue) 284
- Counter Mode 285
- 908594 Programmer’s Manual 286
- Set the Excitation Source 289
- DmotWbk14ExcSrcApply 289
- Sets the Dac Offset 290
- Use DC coupling when 290
- Example: 291
- DcovWbk17Mode_Period 295
- DcovWbk17Mode_Pulsewidth 296
- DcovWbk17Mode_Timing 296
- DcovWbk17Mode_Encoder 296
- Setting the Trigger Level 306
- API Error Codes - daqError 319
- A2 - 162 331
- Programmer’s Manual 332
- Appendix A A 333
- 988294 Programmer’s Manual 334
- 939198 Programmer’s Manual 336
- Custom OEM Installation C 337
- WIN 9x/Me WIN NT/2000/XP 338
- WIN 9x/Me and 338
- WIN NT/2000/XP 338
- Installation Locations: 339
- 958293 Programmer’s Manual 340
- 938295 Programmer’s Manual 342
- Format 347
- Time-of-Day Configuration 356
- Glossary 359
- 986896 Programmer’s Manual 360
- 986896 Glossary G-3 361
- 986896 Glossary G-5 363
- 986896 Glossary G-7 365
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