• Parity: According to configuration in HMC (default None)
• Handshake: RTS/CTS
• Response Timeout: 1000 ms
• Retries: 3
f) Select OK.
3. Search for and connect to device.
a) Select Device → Search to open the Search Device window.
If the HMC is configured for Modbus ASCII or Levelmaster communication,
cycle the power to the transmitter and then open the Search Device window.
The HMC will then communicate using Modbus RTU for 20 seconds and
under that time it is possible to connect with Rosemount Radar Master.
b) In the Protocols(s) list, verify that Modbus is selected.
c) Select Scan Address Range, and type a start and end address.
The default HMC Modbus address is 246.
d) Select Start Scan.
e) Select OK to connect when the device is found.
4. Make sure the HMC Modbus address is set to 246 (the default address).
a) Select Setup → General.
b) In the Device Address box, type 246 and select Store.
5. Enter service mode.
a) Select Service → Enter Service Mode.
b) b. Type the password and select Submit.
The default password is "admin".
6. Upload HMC firmware to device.
a) Select Service → Upload Firmware.
b) Select Browse and navigate to the folder containing the HMC firmware file.
c) Select the ".cry" file, and select Open.
d) In the Upload Firmware window, select Upload to start the firmware upgrade.
7. When upload is finished, select Tools → Diagnostics.
8. Select Device Errors and check for “Checksum”.
9. If “Checksum” is on the list, then do the following:
a) a. Select Tools → Factory Settings.
b) Select All and then select OK.
Reference Manual Service and troubleshooting
00809-0100-4530 April 2019
Reference Manual 235
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