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Fluke 190 [159/159] Rs 485 bus
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Fluke 19xC-2x5C
Users Manual
A-12
RS-485 Bus.
The RS-485 definition specifies differential (balanced)
data lines that are referenced to a ground level. Because
of this, noise immunity is better than for RS-232. The
impedance between the lines is 120 Ω. RS-485 allows for
multiple transmitters and receivers to be connected to the
same bus. Data transmission is adressed to a dedicated
receiver. Data traffic is not continuous.
To check this bustype, ScopeMeter Channel A and B are
on and DC coupled. The recommended probes are the
Fluke 10:1 probes. Connect the probes as shown below.
DATA
+
DATA -
DATA GND
RS-485 bus system layout is shown in the figure below.
CONTROLLER
DEVICE 1
DEVICE 2
DATA +
DATA -
GND
Modbus IEA-485/-RS-485
Содержание
- Fluke 19xc 2x5c 1
- Scopemeter 1
- Software version 8 0 onwards 1
- Users manual 1
- Limited warranty limitation of liability 3
- Service centers 4
- Chapter title page 5
- Table of contents 5
- Fluke 19xc 2x5c 6
- Contents 7
- Fluke 19xc 2x5c 8
- Declaration of conformity 11
- Figure 1 scopemeter test tool kit 12
- Fluke 19xc 2x5c users manual 12
- The following items are included in your test tool kit 12
- Unpacking the test tool kit 12
- When new the rechargeable nimh battery is not fully charged see chapter 9 12
- Safety information read first 14
- Warning 14
- Warning 15
- If safety features are impaired 16
- About this chapter 17
- Chapter 1 17
- Powering the test tool 17
- Using the scope 17
- Resetting the test tool 18
- Navigating a menu 19
- Hiding key labels and menus 20
- Input connections 20
- Making scope connections 21
- Displaying an unknown signal with connect and view 22
- Making automatic scope measurements 23
- Freezing the screen 24
- Using average for smoothing waveforms 25
- Using average persistence and glitch capture 25
- Using persistence to display waveforms 26
- Displaying glitches 27
- Suppressing high frequency noise 27
- Acquiring waveforms 28
- Reversing the polarity of the displayed waveform 28
- Selecting ac coupling 28
- Variable input sensitivity 29
- Using mathematics functions a b axb a vs b 30
- Working with noisy waveforms 30
- Using mathematics function spectrum fft 31
- Comparing waveforms 33
- Pass fail testing 34
- Analyzing waveforms 35
- About this chapter 37
- Chapter 2 37
- Making meter connections 37
- Using the multimeter 37
- Making multimeter measurements 38
- Measuring resistance values 38
- Making a current measurement 39
- Warning 39
- Freezing the readings 41
- Selecting auto manual ranges 41
- Making relative measurements 42
- About this chapter 43
- Chapter 3 43
- Opening the recorder main menu 43
- Using the recorder functions 43
- Plotting measurements over time trendplot 44
- Starting a trendplot function 44
- Displaying recorded data 45
- Changing the recorder options 46
- Turning off the trendplot display 46
- Recording scope waveforms in deep memory scope record 47
- Starting a scope record function 47
- Displaying recorded data 48
- Using scope record in single sweep mode 48
- Using external triggering to start or stop scope record 49
- Analyzing a trendplot or scope record 50
- About this chapter 51
- Chapter 4 51
- Replaying the 100 most recent scope screens 51
- Using replay zoom and cursors 51
- Replaying step by step 52
- Capturing 100 intermittents automatically 53
- Replaying continuously 53
- Turning off the replay function 53
- Zooming in on a waveform 54
- Displaying the zoomed waveform 55
- Turning off the zoom function 55
- Making cursor measurements 56
- Using horizontal cursors on a waveform 56
- Using vertical cursors on a waveform 57
- Using cursors on a a b a b or a b waveform 58
- Using cursors on spectrum measurements 58
- Making rise time measurements 59
- About this chapter 61
- Chapter 5 61
- Triggering on waveforms 61
- Setting trigger level and slope 62
- Using trigger delay or pre trigger 63
- Automatic trigger options 64
- Triggering on edges 65
- Making a single acquisition 66
- Triggering on noisy waveforms 66
- N cycle triggering 67
- Triggering on external waveforms 68
- Triggering on video signals 69
- Triggering on video frames 70
- Triggering on video lines 70
- Detecting narrow pulses 71
- Triggering on pulses 71
- Finding missing pulses 73
- About this chapter 75
- Bushealth function availability 75
- Chapter 6 75
- Introduction 75
- Using the bushealth function 75
- Performing bushealth measurements 76
- Selecting the bus type 76
- Selecting a probe type 77
- Starting and stopping measuring 77
- Reading the screen 78
- Data traffic 80
- Input connections and tested signals 80
- As i bus 81
- Can bus 82
- Rs 232 bus modbus iea 232 rs 232 83
- Rs 485 bus mod bus iea 485 rs 485 84
- Foundation h1 bus 85
- Profibus pa 31 5 kbit s 86
- Warning 86
- Profibus dp rs 485 87
- Ethernet coax 10base2 88
- Ethernet twisted pair 10baset 100baset 89
- Viewing the bus waveform screen 90
- Setting the test limits 91
- Saving and recalling test limits 92
- About this chapter 93
- Chapter 7 93
- Pc and printer 93
- Saving and recalling 93
- Using memor 93
- Using memory pc and printer 93
- Saving screens with associated setups 94
- Deleting screens with associated setups 95
- Recalling a setup configuration 96
- Recalling screens with associated setups 96
- Renaming stored screens 97
- Viewing stored screens 97
- Connecting to a computer 98
- Connecting to a printer 98
- Documenting screens 98
- Setting up the printing configuration 99
- Printing a screen 100
- About this chapter 101
- Chapter 8 101
- Tips pdf 101
- Using the standard accessories 101
- Warning 102
- Measuring using independently floating isolated inputs 103
- Using the independently floating isolated inputs 103
- Resetting the test tool 105
- Suppressing key labels and menu s 105
- Using the tilt stand 105
- Adjusting the contrast and brightness 106
- Changing the information language 106
- Changing date and time 107
- Changing the display color 107
- Saving battery life 108
- Setting the power down timer 108
- Changing the auto set options 109
- About this chapter 111
- Chapter 9 111
- Cleaning the test tool 111
- Maintaining the test tool 111
- Storing the test tool 111
- Charging the batteries 112
- Extending battery operation time 113
- Calibrating the voltage probes 114
- Replacing the nimh battery pack bp190 114
- Displaying calibration information 116
- Parts and accessories 116
- Replacement parts 117
- Optional accessories 120
- The operation time of fully charged batteries is too short 121
- The printer does not print 121
- The screen remains black 121
- The test tool does not start up 121
- The test tool shuts down after a few seconds 121
- Troubleshooting 121
- Battery operated fluke accessories do not function 122
- Flukeview does not recognize the test tool 122
- Chapter 10 123
- Introduction 123
- Specifications 123
- Dual input oscilloscope 124
- Horizontal 124
- Isolated inputs a and b vertical 124
- Automatic connect and view trigger 125
- Edge trigger 125
- Isolated external trigger 125
- Trigger and delay 125
- Video trigger 125
- Automatic capturing scope screens 126
- Automatic scope measurements 126
- Continuous auto set 126
- Dc voltage vdc 126
- General 126
- Pulse width trigger 126
- Ac dc voltage true rms 127
- Ac voltage vac 127
- Amperes amp 128
- Duty cycle duty 128
- Frequency hz 128
- Pulse width pulse 128
- Decibel db 129
- Temperature temp 129
- Continuity cont 130
- Dmm measurements on meter inputs 130
- General 130
- Meter functions 130
- Meter input 130
- Ohms ω 130
- Ac dc voltage true rms 131
- Ac voltage vac 131
- Amperes amp 131
- Dc voltage vdc 131
- Temperature temp 131
- Amperes amp 132
- Recorder 132
- Scope record 132
- Trendplot meter or scope 132
- Cursor measurements 133
- Fieldbus bushealth 133
- Replay 133
- Zoom replay and cursors 133
- Display 134
- Mechanical 134
- Memory 134
- Miscellaneous 134
- Probe calibration 134
- Environmental 135
- Optical interfaceport 135
- Safety 136
- 1 probe 137
- Accuracy 137
- Electrical specifications 137
- Safety 137
- Altitude operating km 10 000 feet storage 12 km 40 000 feet 138
- Environmental 138
- Figure 64 max voltage from probe tip to earth ground and from probe tip to probe reference 138
- Fluke 19xc 2x5c users manual 138
- Humidity operating at 10 to 30 c 50 to 86 f 95 138
- Temperature operating 0 to 50 c 32 to 122 f storage 20 to 60 c 4 to 140 f 138
- Electromagnetic immunity 139
- Fluke 19xc 2x5c 142
- Fluke 19xc 2x5c 144
- Appendices 146
- Appendix a 148
- Appendix a bushealth measurements 148
- Bushealth measurements 148
- General 148
- Introduction 148
- As i bus 149
- Tips and hints per bus type 149
- Used probes and accessories 149
- Can bus devicenet 150
- Modbus iea 232 rs 232 152
- Modbus iea 485 rs 485 152
- Foundation fieldbus h1 31 5 kbits s 153
- Profibus dp rs 485 154
- Profibus pa 31 5 kbits s 155
- Warning 155
- Ethernet coax 10base2 156
- Ethernet twisted pair 10baset 157
- Rs 232 bus 158
- Rs 485 bus 159
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