
July 22, 2022 PN 214609 Rev A
www.ricelake.com
Content subject to change without notice.
© Rice Lake Weighing Systems 230 W. Coleman St. • Rice Lake, WI 54868
United States: 800-472-6703
International: +1 715-234-9171
3. Update Firmware
In order for wheel weigh pads and Ai-1 indicators originally
supplied with Bluetooth® modules to use RF modules, their
firmware must be updated.
IMPORTANT: Firmware update supports Windows 10
and 11 computers.
NOTE: Firmware update duration varies; plan for
approximately five to ten minutes for a wheel weigh pad
and 25 to 45 minutes for an Ai-1 Indicator.
1. Download 2.4GHz Load Ranger firmware from:
https://www.ricelake.com/firmware
2. Unzip firmware file (files for Ai-1 and indicator wheel
weigh pad are included):
NOTE: Firmware file names contain version numbers
and are equal to or greater than displayed above.
3. Attach a serial cable to the Ai-1 indicator’s serial port
and connect free end to computer.
NOTE: The Ai-1 indicator’s serial port is located on the
front panel.
Figure 11. Ai-1 Indicator Serial Port
4. Turn on Ai-1 indicator.
5. Run Ai-1 indicator firmware executable.
6. Select a serial port number from the drop-down menu.
7. Enable the USB->COM check box, if using a USB to
serial converter.
8. Select OK.
Figure 12. Firmware Update Configuration Window
9. A connection status indicator displays until a connection
between the computer and Ai-1 indicator is established.
Figure 1-1. Connection Status Window
10. Once communication is established, a firmware update
status window displays.
Figure 2. Firmware Update Status Window
11. When firmware has been updated, a success prompt
displays.
12. Select OK to close the window.
Figure 3. Firmware Success Prompt
13. After firmware update is completed, allow device to
reboot if it power cycles.
14. Power off Ai-1 indicator and remove serial cable.
15. Attach a serial cable to the wheel weigh pad’s serial port
and connect free end to computer.
NOTE: The wheel weigh pad’s serial port is located
inside the electronics cover on the CPU board.
Figure 4. Wheel Weigh Pad Serial Port
16. Run wheel weigh pad firmware executable.
17. Repeat steps Step 7 through Step 14.
18. Reinstall wheel weigh pad’s cover and protection plate
with previously removed hardware (Figure 2 on page 1).
19. Repeat steps Step 15 through Step 18 for remaining
wheel weigh pads.
Device Firmware File Name
Ai-1 Indicator EGT-AF13_07.07.00_XX_NL2.08_RICELAKE.exe
Weigh Pad
Dfw06WWSRF_05.03.00_ML_NL2.05_LCD_RICELAKE.exe
EXC-
SIG+
SIG-
EXC+
SIG-
SEN+
SEN-
SIG+
EXC-
EXC+
EXC-
SIG+
SIG-
EXC+
EXC-
SIG+
SIG-
EXC+
CELL2
CELL4CELL3
CELL1
J2
SENSE
+5V GND
COM 1
COM 1
B[-]
A[+]
GND
RX
CTS
TX
RS232/RS485
RS232
01 02
J4
ON
+5V
GND
J 1
CAL
RS232
COM 2
SENSOR BOOT
J3
CTS
RX
TX
+5V GND TX RX
COM2 TTL
RS232/RS485