Enabling Modbus Mode from Vaisala Industrial Protocol - GMP251

GMP251 User Guide

Document code
English (United States)
Document type
User guide
If you need to switch from Vaisala Industrial Protocol to Modbus mode, you must configure the following settings:
  • Serial line operating mode
  • Modbus address
  • Serial line settings (bit rate, parity, stop and data bits)
  1. Connect the USB cable to your PC and start the terminal application as instructed in Connecting with a Computer.
  2. Set the serial mode to Modbus with the smode command:  
    smode modbus
  3. Set the Modbus address to 240 with the addr command:
    addr 240
  4. Set the serial line settings to 19200/N/8/2 with the seri command:
    seri 19200 N 8 2
  5. Power off (disconnect) the probe or reset with the resetcommand. The new configuration is available at the next restart.