Vaisala MMT330 - Manual (Page 6)

User's Guide _______________________________________________________________________
4 ____________________________________________________________________ M210733EN-G
INTV ............................................................................. 110
SDELAY ....................................................................... 111
ECHO ........................................................................... 111
Data Recording ..................................................................... 111
Selecting Data Recording Quantities ................................ 112
DSEL ............................................................................ 112
View Recorded Data .......................................................... 112
DIR ............................................................................... 112
PLAY ............................................................................ 114
Deleting the Recorded Files .............................................. 115
UNDELETE .................................................................. 115
Analog Output Settings ....................................................... 116
Changing Output Mode and Range ................................... 116
Analog Output Quantities .................................................. 117
AMODE/ASEL .............................................................. 118
Analog Output Tests .......................................................... 119
ITEST ........................................................................... 119
Analog Output Fault Indication Setting .............................. 120
AERR ............................................................................ 120
Extend Analog Output Range ............................................ 121
Operation of Relays .............................................................. 121
Quantity for Relay Output .................................................. 121
Relay Setpoints ................................................................. 121
Hysteresis .......................................................................... 123
Relay Indicating Transmitter Error Status ......................... 123
Enabling/Disabling Relays ................................................. 125
Setting Relay Outputs........................................................ 125
RSEL ............................................................................ 127
Testing Operation of Relays .............................................. 129
RTEST .......................................................................... 129
CHAPTER 5
MODBUS .................................................................................................... 131
Overview of Modbus Protocol Support .............................. 131
Taking Modbus into Use .................................................... 132
Enabling Serial Modbus ....................................................... 133
Using Display/Keypad (Optional) ...................................... 133
Using Serial Line ............................................................... 133
Enabling Ethernet Modbus .................................................. 134
Using Display/Keypad (Optional) ...................................... 134
Using Serial Line ............................................................... 136
Diagnostic Modbus Counters .............................................. 137
Viewing Counters Using Display/Keypad .......................... 137
Viewing Counters Using Service Port ............................... 137
Disabling Modbus ................................................................. 138
CHAPTER 6
PPM CONVERSION ................................................................................... 139
MMT330 ppm Conversion for Transformer Oils ................ 139
Conversion Model with Average Coefficients ................... 139
Conversion Model with Oil-specific Coefficients .............. 140