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Vaisala DMT340 User Manual

Page 6

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User's Guide _______________________________________________________________________

4 ____________________________________________________________________ M210704EN-G

Selecting the Data Recording Quantities .......................... 119

DSEL ............................................................................ 119

View Recorded Data .......................................................... 120

DIR ............................................................................... 120

PLAY ............................................................................ 121

Deleting the Recorded Files .............................................. 122

UNDELETE .................................................................. 122

Analog Output Settings ....................................................... 123

Changing the Output Mode and Range............................. 123

Analog Output Quantities .................................................. 124

AMODE/ASEL .............................................................. 125

Analog Output Tests .......................................................... 126

ITEST ........................................................................... 126

Analog Output Fault Indication Setting .............................. 127

AERR ............................................................................ 127

Extend Analog Output Range ............................................ 128

Operation of Relays .............................................................. 128

Quantity for Relay Output .................................................. 128

Measurement-Based Relay Output Modes ....................... 128

Relay Setpoints ............................................................ 128

Hysteresis ..................................................................... 130

Relay Indicating Transmitter Error Status ......................... 130

Enabling/Disabling the Relays ........................................... 132

Operation of the Indication LEDs ...................................... 132

Setting the Relay Outputs ................................................. 133

RSEL ............................................................................ 134

Testing the Operation of Relays ........................................ 135

RTEST .......................................................................... 135

Sensor Functions ................................................................. 136

AutoCal .............................................................................. 136

Automatic AutoCal ........................................................ 136

Manual AutoCal ............................................................ 137

Sensor Purge ..................................................................... 137

Starting and Configuring Sensor Purge............................. 138

Using Display/Keypad (Optional) ................................. 138

Using Serial Line .......................................................... 139

PURGE .................................................................... 139

PUR ......................................................................... 139

Sensor Warming ................................................................ 140

CHAPTER 5

MODBUS .................................................................................................... 141

Overview of Modbus Protocol Support .............................. 141

Taking Modbus into Use .................................................... 142

Enabling Serial Modbus ....................................................... 143

Using Display/Keypad (Optional) ...................................... 143

Using Serial Line ............................................................... 143

Enabling Ethernet Modbus .................................................. 144

Using Display/Keypad (Optional) ...................................... 144

Using Serial Line ............................................................... 146

Diagnostic Modbus Counters .............................................. 147

Viewing Counters Using Display/Keypad .......................... 147

Viewing Counters Using Service Port ............................... 147

Disabling Modbus ................................................................. 148