UMAX030211 Version 1.0.2. Preliminary Documentation – May be subject to change
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5.
Firmware Reflashing Instructions
WARNING!
The firmware reflashing can be carried out only using Axiomatic
Technologies
Electronic Assistant kit AX070502
and
250k CAN baud rate
.
DO NOT
START THE BOOTLOADER WITHOUT THE KIT!
The Electronic Assistant compatible J1939 bootloader can be started by writing ‘1’ to subindex 0 of
the object 55AAh:
1. To do so, the object 55AAh can be accessed using CANopen tools or by sending the following
SDO write message using CAN Assistant – Scope (assuming default node id of 0x7F):
ID
Len D0
D1
D2
D3
D4
D5
D6
D7
67F
8
2F
AA
55
00
01
00
00
00
If everything is correct, the controller acknowledges the writing operation and activates software
reset after the message is sent.
2. Run the Electronic Assistant (EA) software and connect to the CAN port.
The CAN baud rate
needs to be changed to 250k because the bootloader and EA use J1939 messaging
. The
user should see the following screen: