Manual

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VAISALA ________________________________________________________________________ 11
List of Tables
Table 1 Manual Revisions ..................................................................... 14
Table 2 Application, Location Classes .................................................. 16
Table 3 Quantities Measured by MMT330 ............................................ 19
Table 4 MMT338 Probe Dimensions ..................................................... 42
Table 5 Connecting the Twisted Pair Wires to the Screw Terminals .... 58
Table 6 4-Wire (Switch 3: On) ............................................................... 59
Table 7 2-Wire (Switch 3: Off) ............................................................... 60
Table 8 Observation Periods and Resolution ........................................ 63
Table 9 Wiring of the Optional 8-Pin Connector .................................... 65
Table 10 Periods for Trend and Max/Min Calculations ........................... 68
Table 11 Graph Information Messages in Cursor Mode ......................... 69
Table 12 ALSEL Parameters ................................................................... 76
Table 13 Default Serial Communication Settings for the User Port ........ 79
Table 14 Communication Settings for the Service Port .......................... 81
Table 15 IP Settings for the LAN and WLAN Interfaces ......................... 82
Table 16 Wireless LAN Settings .............................................................. 85
Table 17 Measurement Commands ........................................................ 92
Table 18 Formatting Commands ............................................................. 92
Table 19 Data Recording Commands ..................................................... 93
Table 20 Calibration and Adjustment Commands ................................... 93
Table 21 Setting and Testing the Analog Outputs .................................. 93
Table 22 Setting and Testing the Relays ................................................ 93
Table 23 Other Commands ..................................................................... 94
Table 24 FORM Command Modifiers...................................................... 99
Table 25 Filtering Levels ....................................................................... 101
Table 26 Selection of Output Modes ..................................................... 108
Table 27 Relay State Examples ............................................................ 123
Table 28 Supported Modbus Variants ................................................... 127
Table 29 Error Messages ...................................................................... 138
Table 30 Indicator Led Functions .......................................................... 143
Table 31 Standard Probe Cable Lengths and Approximate
Transmitter Weight (in kg/lb) .................................................. 154
Table 32 Spare Parts and Accessories ................................................. 156
Table 33 Supported Function Codes..................................................... 163
Table 34 MMT330 Modbus Register Blocks ......................................... 164
Table 35 Measurement Data Registers................................................. 166
Table 36 Status Registers ..................................................................... 166
Table 37 Configuration Parameter Registers ........................................ 167
Table 38 Configuration Flag Registers .................................................. 167
Table 39 MMT330 Exception Status Outputs ....................................... 167
Table 40 MMT330 Modbus Diagnostics ................................................ 168
Table 41 MMT330 Modbus Device Identification .................................. 169
Table 42 MMT330 Modbus Exception Responses ............................... 169