Vaisala MMT330 Bedienungsanleitung Seite 59
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Chapter 3 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 59
1102-028
Figure 34 4-Wire RS-485 Bus
Table 6 4-Wire (Switch 3: On)
RS-485 master
Data
MMT330
Tx D1+
→
Rx D1+
Tx D0-
→
Rx D0-
Rx D1+
←
Tx D1+
Rx D0-
←
Tx D0-
Stub
Termination Termination
Termination Termination
Twisted pair
120R
120R
120R
120R
Twisted pair
Stub
Stub
Baud > 19.2K Stub < 10ft, 3m
Baud > 112K Stub < 1ft, 0.3m
Rx D0-
Rx D1+
Common
Tx D0-
Tx D1+
Switch
Term off
Term off
2/4 wire on
RS422 off
Tx D0-
Tx D1+
Common
Rx D0-
Rx D1+
Switch
Term off
Term off
2/4 wire on
RS422 off
Tx D0-
Tx D1+
Common
Rx D0-
Rx D1+
RS485-1
RS485-1
Address MM
Address NN
RS485 bus master
Junction
box
Junction
box
Junction
box
Common
line
Common
line
- USER'S GUIDE 1
- Table of Contents 3
- CHAPTER 4 4
- CHAPTER 6 6
- CHAPTER 7 6
- CHAPTER 8 7
- APPENDIX A 7
- List of Figures 9
- List of Tables 11
- GENERAL INFORMATION 13
- Version Information 14
- Documentation Conventions 14
- ESD Protection 15
- Recycling 16
- Regulatory Compliances 16
- Patent Notice 18
- Trademarks 18
- Software License 18
- Warranty 18
- PRODUCT OVERVIEW 19
- Basic Features and Options 20
- Structure of the Transmitter 20
- 0604-006 21
- Probe Options 22
- Typical Applications 23
- Transformer Oil 24
- 0510-029 25
- INSTALLATION 27
- 183 (7.20) 28
- 133 (5.24) 28
- 59 (2.32) 28
- Thickness 28
- 9.5 (0.37) 28
- Pole or Pipeline 29
- 0503-007 30
- 0503-041 30
- 0503-008 31
- 0509-051 31
- Panel Mounting Frame 32
- Cable Bushings 33
- Grounding the Cables 34
- WARNING 36
- CAUTION 38
- 0510-030 39
- 0509-144 40
- 0509-150 40
- 0510-028 42
- Tightening the Clasp Nut 43
- 0507-043 45
- Sampling Cell for MMT338 47
- Optional Modules 48
- Installation 49
- Warnings 50
- Third Analog Output 53
- Installation and Wiring 54
- RS-422/485 Interface 56
- Figure 34 4-Wire RS-485 Bus 59
- 1102-027 60
- LAN Interface 61
- WLAN Interface 62
- Data Logger Module 63
- 0706-068 64
- 8-Pin Connector 65
- OPERATION 67
- Graphic History 68
- 0706-030 69
- Menus and Navigation 70
- Rounding Setting 71
- Display Backlight Setting 71
- Display Contrast Setting 71
- Keypad Lock (Keyguard) 72
- Menu PIN Lock 72
- Display Alarms 73
- Configuring a Display Alarm 74
- 0802-070 75
- Serial Line Communication 78
- User Port Connection 79
- Service Port Connection 80
- LAN Communication 81
- IP Configuration 82
- Wireless LAN Configuration 85
- Communication Protocol 88
- Terminal Program Settings 89
- 0810-070 90
- 0810-071 91
- List of Serial Commands 92
- Serial Line 94
- Outputting Reading Once 95
- General Settings 97
- Date and Time 100
- Data Filtering 101
- Device Information 102
- Serial Output Settings 106
- Using Serial Line 107
- Data Recording 110
- View Recorded Data 111
- Deleting the Recorded Files 113
- Analog Output Settings 114
- Analog Output Quantities 115
- AMODE/ASEL 116
- Analog Output Tests 117
- Operation of Relays 119
- 1102-007 120
- Hysteresis 121
- 1102-040 122
- Enabling/Disabling Relays 123
- Setting Relay Outputs 123
- 1105-002 124
- Testing Operation of Relays 126
- CHAPTER 5 127
- Taking Modbus into Use 128
- Enabling Serial Modbus 129
- Enabling Ethernet Modbus 130
- 1101-034 131
- 1101-036 131
- Diagnostic Modbus Counters 133
- Disabling Modbus 134
- MAINTENANCE 135
- Changing the Sensor 136
- Error States 137
- Table 29 Error Messages 138
- Technical Support 139
- Product Returns 139
- CALIBRATION AND ADJUSTMENT 141
- Cleaning the Sensor 142
- Relative Humidity Adjustment 143
- Using Display/Keypad 144
- Temperature Adjustment 147
- Analog Output Adjustment 149
- TECHNICAL DATA 151
- Operating Environment 152
- Probe Specifications 152
- Inputs and Outputs 153
- Mechanics 153
- Modules 154
- Relay Module 155
- RS-485 Module 155
- LAN Interface Module 155
- WLAN Interface Module 155
- Spare Parts and Accessories 156
- CABLE BUSHINGS 157
- WINDOWS SOFTWARE 157
- Dimensions (mm/inch) 158
- 92 (3.62) 159
- 116 (4.57) 159
- 0509-149 160
- 0509-146 160
- MMT338 161
- MODBUS REFERENCE 163
- Register Map 164
- 16-Bit Integer Format 165
- Measurement Data (Read-Only) 166
- Status Registers (Read-Only) 166
- Exception Status Outputs 167
- Diagnostic Sub-Functions 168
- Exception Responses 169
- *M210764EN* 171
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