Vaisala HUMICAP HMT330 SERIES Betriebsanweisung Seite 203
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Appendix C ______________________________________________________ MODBUS Reference
VAISALA ______________________________________________________________________ 201
Diagnostic Sub-Functions
HMT330 supports some of the MODBUS diagnostic functions described
in the MODBUS Application Protocol Specification V1.1b. These
diagnostic functions are accessed with function code 08. See Table 43
below for details.
Table 43 HMT330 MODBUS Diagnostics
Code Sub-Function Name Notes
00 (0x00) Return Query Data
01 (0x01) Restart Communications
Option
Cancels the “Listen Only” mode.
Data field must be set to “00 00”
for Restart Communications
Option. Sub-Function 01 with
data field “FF 00” is rejected.
02 (0x02) Return Diagnostic Register Non-zero if there are active
transmitter errors.
For same error information, see
status registers 0516 and 0517.
The value of the Diagnostic
Register is a logical OR of these
two status registers.
04 (0x04) Force Listen Only Mode Puts device “off-line”
10 (0x0A) Clear Counters and
Diagnostic Register
Diagnostic Register cannot be
cleared
11 (0x0B) Return Bus Message Count Total number of messages seen
on the bus/interface
12 (0x0C) Return Bus Communication
Error Count
Number of messages with bad
MODBUS RTU CRC or
MODBUS TCP frame
13 (0x0D) Return Bus Exception Error
Count
Number of MODBUS exception
responses sent
14 (0x0E) Return Slave Message Count Number of MODBUS messages
processed
15 (0x0F) Return Slave No Response
Count
Number of MODBUS messages
received without sending a
response. This happens for
received broadcast messages
(MODBUS RTU only) or when
HMT330 is in the “Listen Only”
mode.
Although MODBUS Diagnostics are standardized only for serial line
devices, HMT330 supports the same diagnostic functions also on
MODBUS TCP.
NOTE
Resetting, powering up the transmitter, or reselecting the MODBUS
mode (by serial command or with the user interface) resets all MODBUS
diagnostic counters and cancels any “Listen Only” mode.
- 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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