Vaisala MMT330 - Manual (Page 8)

User's Guide _______________________________________________________________________
6 ____________________________________________________________________ M210733EN-G
MMT337 ....................................................................... 160
MMT338 ....................................................................... 160
Inputs and Outputs ............................................................ 161
Mechanics ......................................................................... 161
Technical Specifications of Optional Modules ................... 162
Power Supply Module .................................................. 162
Analog Output Module .................................................. 162
Relay Module ............................................................... 163
RS-485 Module ............................................................ 163
LAN Interface Module ................................................... 163
WLAN Interface Module ............................................... 163
Data Logger Module ..................................................... 164
Spare Parts and Accessories .............................................. 164
Dimensions (mm/inch) ......................................................... 166
MMT332 ............................................................................ 168
MMT337 ............................................................................ 168
MMT337 with Swagelok Connector ................................... 169
MMT338 ............................................................................ 169
APPENDIX A
MODBUS REFERENCE ............................................................................. 171
Function Codes..................................................................... 171
Register Map ......................................................................... 172
Data Encoding ................................................................... 172
32-Bit Floating Point Format ......................................... 172
16-Bit Integer Format ................................................... 173
Measurement Data (Read-Only) ....................................... 174
Status Registers (Read-Only) ........................................... 174
Configuration Registers ..................................................... 175
Exception Status Outputs .................................................... 175
Diagnostic Sub-Functions ................................................... 176
Device Identification Objects .............................................. 177
Exception Responses .......................................................... 177