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Chapter 5 _______________________________________ Serial Communication and Analog Output
VAISALA _______________________________________________________________________ 69
Missing Readings and Error Indication
If WMT700 is not able to measure the wind, it indicates a missing
reading in the output. Most common reasons for measurement problems
are foreign objects (such as ice, birds, or other foreign object) on the line
of measurement or sound reflections from nearby objects (such as wind
tunnel walls).
The default error indication is an out-of-range signal, which is more than
10 V or 20 mA but other error settings can also be configured. You can
also disable error indication if necessary.
For more information, see section Configuration Parameters on page 81.
- USER'S GUIDE 1
- Table of Contents 3
- CHAPTER 5 4
- CHAPTER 6 4
- CHAPTER 10 6
- APPENDIX A 6
- APPENDIX B 6
- APPENDIX C 6
- APPENDIX D 6
- List of Figures 7
- List of Tables 9
- Version Information 12
- Related Manuals 12
- Documentation Conventions 13
- Recycling 15
- Regulatory Compliances 15
- Trademarks 16
- Warranty 16
- PRODUCT OVERVIEW 17
- 1003-005 18
- 1104-064 20
- Accessories 22
- Bird Cage 23
- WM Verifier 24
- Table 7 WMT700 Cables 25
- FUNCTIONAL DESCRIPTION 27
- 1005-007 28
- Calculations 30
- Overview 31
- Scalar Averaging 32
- Vector Averaging 33
- Measurement Methods 34
- INSTALLATION 37
- WARNING 38
- Installation Procedure 40
- Unpacking Instructions 41
- Mounting 42
- 1006-077 44
- 1006-079 47
- 1103-054 49
- Alignment 50
- 0208-025 51
- 1001-018 51
- 1104-086 53
- Cable 2m and Cable 10m 55
- 1009-016 56
- 1103-061 58
- Powering 60
- 1104-054 61
- 1104-055 61
- SERIAL COMMUNICATION AND 63
- ANALOG OUTPUT 63
- Protocols 65
- Serial Interface Timing 66
- Analog Output 67
- Analog Output Types 68
- Analog Output Scaling 68
- Voltage 8 mV / mph 69
- Voltage 4 mV / ° 69
- S aout1minv,0.1 70
- S aout1maxv,5 70
- CONFIGURATION COMMANDS 73
- Mode Switching Commands 76
- Parameters Handling Commands 76
- G — Get Parameter 78
- Display Port Settings 79
- START — Start Continuous 80
- Measurement 80
- STOP — Stop Wind Measurement 80
- Information Commands 82
- Configuration Parameters 83
- Configuring Data Messages 85
- Items for Data Messages 86
- Status Flags 88
- S wndOrientation,0 90
- OPERATION 93
- Program 94
- Data Messages 94
- WMT700 Data Message 21 96
- WMT700 Data Message 22 97
- WMT700 Data Message 23 98
- WMT700 Data Message 24 99
- WMT700 Data Message 25 100
- Missing Readings 101
- Measurement Mode Commands 102
- WMT700 Profile Commands 103
- MEAS — Start Measurement 104
- POLL — Poll Data 105
- SLEEP — Enter Low-Power Mode 105
- @a M 12<CR><LF> 106
- MAINTENANCE 107
- Visual Inspection 108
- Cleaning 108
- Testing Proper Operation 108
- 1005-003 109
- TROUBLESHOOTING 111
- Error and Event Messages 113
- Technical Support 116
- Product Returns 116
- TECHNICAL DATA 117
- Table 31 General 119
- Table 32 Accessories 120
- Dimensions 121
- 1103-055 122
- TYPICAL SYSTEM ENVIRONMENTS 125
- 1003-052 126
- 1004-001 128
- CONFIGURATION PARAMETERS 131
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