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VAISALA ________________________________________________________________________ 9
List of Tables
Table 1
Manual Revisions ..................................................................... 12
Table 2
Quantities and Their Abbreviations .......................................... 17
Table 3
Optional Quantities and Their Abbreviations ........................... 18
Table 4
DMT348 Probe Dimensions ..................................................... 42
Table 5
Connecting the Twisted Pair Wires to the Screw Terminals .... 62
Table 6
4-Wire (Switch 3: On) ............................................................... 63
Table 7
2-Wire (Switch 3: Off) ............................................................... 64
Table 8
Observation Periods and Resolution........................................ 68
Table 9
Wiring of the Optional 8-Pin Connector.................................... 70
Table 10
Periods for Trend and Max/Min Calculations ........................... 73
Table 11
Graph Information Messages ................................................... 74
Table 12
Default Serial Communication Settings for the User Port ........ 83
Table 13
Communication Settings for the Service Port .......................... 85
Table 14
IP Settings for the LAN and WLAN Interfaces ......................... 86
Table 15
Wireless LAN Settings.............................................................. 89
Table 16
Measurement Commands ........................................................ 96
Table 17
Formatting Commands............................................................. 96
Table 18
Data Recording Commands ..................................................... 97
Table 19
Purge Commands .................................................................... 97
Table 20
Autocalibration Commands ...................................................... 97
Table 21
Calibration and Adjustment Commands................................... 97
Table 22
Setting and Testing the Analog Outputs .................................. 97
Table 23
Setting and Testing the Relays ................................................ 97
Table 24
Other Commands ..................................................................... 98
Table 25
FORM Command Modifiers.................................................... 104
Table 26
Conversion Factors for Pressure Units .................................. 108
Table 27
Filtering Levels ....................................................................... 109
Table 28
Selection of Output Modes ..................................................... 117
Table 29
Relay State Examples ............................................................ 133
Table 30
Supported MODBUS Variants................................................ 143
Table 31
Error Messages ...................................................................... 155
Table 32
Indicator Led Functions .......................................................... 158
Table 33
Options and Accessories........................................................ 174
Table 34
Supported Function Codes .................................................... 185
Table 35
DMT340 MODBUS Register Blocks....................................... 186
Table 36
Measurement Data Registers ................................................ 188
Table 37
Status Registers ..................................................................... 189
Table 38
Configuration Parameter Registers........................................ 189
Table 39
Configuration Flag Registers.................................................. 190
Table 40
DMT340 Exception Status Outputs........................................ 190
Table 41
DMT340 MODBUS Diagnostics ............................................. 191
Table 42
DMT340 MODBUS Device Identification ............................... 192
Table 43
DMT340 MODBUS Exception Responses............................. 192
