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Reference Manual
00809-0100-4811, Rev DA
Appendix C: Rosemount 3300 Series with HART
®
to Modbus
®
Converter
January 2015
Rosemount 3300 Series with HART
®
to Modbus
®
Converter
C.13 HMC Firmware Upgrade in Rosemount Radar
Master
The HMC firmware is upgraded using Rosemount Radar Master (RRM). A detailed description on
how to carry out the firmware upgrade is shown on the following pages.
Note
All settings in the HMC will be lost after upgrading the transmitter. Reconfiguration of Modbus
communication setup and alarm handling is required after completing the upgrade.
Note
During firmware upgrade, the HMC Modbus RTU address must be 246, the default address.
Make sure to disconnect other Modbus RTU devices that are connected and have address 246.
Note
Do not interrupt communication between the PC and the 3300 level transmitter during the
firmware upload.
1. Start Rosemount Radar Master (RRM).
2. Enable Modbus communication and set communication preferences.
a. Select View > Communication Preferences.
b. In the Modbus tab, select the Enable Modbus Communication check-box.
c. In the Port list, select the COM port number that the RS-485 Converter is
connected to.
d. Click Advanced and use the following settings:
Modem: RS-485
Baudrate: According to configuration in HMC (default 9600)
Stop Bits: According to configuration in HMC (default 1)
Parity: According to configuration in HMC (default None)
Handshake: RTS/CTS
Response Timeout: 1000 ms
Retries: 3
3. Select OK.
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