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Chapter 4 ________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 97
Communicating with a Transmitter in POLL
Mode
OPEN
When all transmitters on the RS-485 bus are in POLL mode the OPEN
command sets one transmitter temporarily to STOP mode so that other
commands can be entered.
OPEN [aa]
where
aa = Address of the transmitter (0 ... 255)
CLOSE
The CLOSE command switches the transmitter back to the POLL mode.
Example:
>OPEN 2 (opens the line to transmitter 2, other
transmitters stay in POLL mode)
>CRH (for example, calibration performed)
...
>CLOSE (line closed)
- USER'S GUIDE 1
- Table of Contents 3
- CHAPTER 4 4
- CHAPTER 6 7
- CHAPTER 7 7
- CHAPTER 8 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
- DNV Type Approval 17
- Patent Notice 18
- Trademarks 18
- PRODUCT OVERVIEW 21
- Basic Features and Options 22
- Structure of the Transmitter 23
- 0508-010 24
- 0911-066 26
- INSTALLATION 29
- 0804-065 30
- 0503-004 30
- Pole or Pipeline 32
- 0503-007 33
- 0503-041 33
- Panel Mounting Frame 35
- Cable Bushings 36
- Grounding the Cables 37
- WARNING 39
- CAUTION 40
- 0703-041 41
- 0507-024 43
- Applications 45
- 0506-029 46
- 0503-034 46
- Temperature Probe (Optional) 48
- Standard 178 mm 120 mm 49
- Optional 400 mm 340 mm 49
- Tightening the Clasp Nut 50
- Optional Modules 51
- Installation 52
- Warnings 53
- Third Analog Output 56
- Installation and Wiring 57
- RS-422/485 Interface 59
- 1 (not connected) Rx D0 61
- 2 (not connected) Rx D1+ 61
- 3 Common Common 61
- 4 D0- Tx D0 61
- 5 D1+ Tx D1+ 61
- Figure 37 4-Wire RS-485 Bus 62
- RS-485 master Data HMT330 63
- D1+ ↔ D1+ 63
- D0- ↔ D0 63
- LAN Interface 64
- WLAN Interface 65
- Attaching the WLAN Antenna 66
- Data Logger Module 67
- 0706-068 68
- OPERATION 71
- Graphic History 72
- 0706-030 73
- Changing the Language 75
- Rounding Setting 75
- Display Backlight Setting 75
- Display Contrast Setting 76
- Keypad Lock (Key guard) 76
- Menu PIN Lock 76
- Display Alarms 77
- Configuring a Display Alarm 78
- 0802-069 79
- 0802-070 79
- Serial Line Communication 81
- User Port Connection 82
- Service Port Connection 83
- LAN Communication 84
- IP Configuration 85
- Wireless LAN Configuration 88
- Communication Protocol 91
- Terminal Program Settings 92
- 0810-070 93
- List of Serial Commands 95
- Outputting Reading Once 98
- FTIME and FDATE 100
- General Settings 102
- Using Serial Line 103
- Examples: 104
- Using Display/Keypad 106
- Date and Time 107
- Data Filtering 108
- Device Information 109
- Serial Output Settings 112
- Data Recording 117
- View Recorded Data 118
- Deleting the Recorded Files 120
- Analog Output Settings 121
- 0503-045 122
- AMODE/ASEL 124
- Analog Output Tests 125
- Operation of Relays 127
- 1102-007 128
- 1102-040 130
- 0706-003 132
- Testing Operation of Relays 134
- Sensor Functions 135
- Manual Chemical Purge 136
- Chemical Purge in Power Up 136
- Using Buttons on Motherboard 137
- Sensor Heating 139
- CHAPTER 5 141
- Taking MODBUS into Use 142
- Enabling Serial MODBUS 143
- Enabling Ethernet MODBUS 145
- Diagnostic MODBUS Counters 148
- Disabling MODBUS 149
- MAINTENANCE 151
- Changing the Sensor 152
- Error States 153
- Table 32 Error Messages 154
- Technical Support 155
- Product Returns 155
- CALIBRATION AND ADJUSTMENT 157
- 0508-013 158
- 0706-007 158
- Temperature Adjustment 163
- Analog Output Adjustment 165
- TECHNICAL DATA 167
- Optional Temperature Probe 168
- Calculated Variables 169
- 1013 mbar) 169
- Probe Option) 171
- Operating Environment 171
- Inputs and Outputs 172
- Mechanics 172
- Modules 173
- Relay Module 174
- RS-485 Module 174
- LAN Interface Module 174
- WLAN Interface Module 174
- Options and Accessories 175
- Dimensions (mm/inch) 177
- 0804-035 178
- 0804-060 180
- 0804-059 180
- Temperature Probe 182
- PROBE INSTALLATION KITS AND 183
- INSTALLATION EXAMPLES 183
- HMT337) 184
- Cable Gland 186
- 0508-015 187
- 0508-022 187
- 0507-015 189
- 0507-043 190
- 0804-063 192
- MODBUS REFERENCE 197
- Register Map 198
- 16-Bit Integer Format 199
- Measurement Data (Read-Only) 200
- Status Registers (Read-Only) 201
- Configuration Registers 201
- Exception Status Outputs 202
- Diagnostic Sub-Functions 203
- Exception Responses 204
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