Union Products Communication display Unit 6696 ユーザーズマニュアル

APPENDIX A SOFTWARE UPGRADES

SM 7063 07/97 A-2

A.4

Procedure for Downloading CDU Software Upgrades

To download CDU software upgrades, perform the following:

1. On the PC, copy the new Upgrade Version of the file “cdu.hex” to the floppy disk or hard drive

directory containing the Cab Unit Flash Loader Software “load.exe”.

2. Turn OFF power to the CDU.

3. Connect one end of the serial cable to the CDU’s DIAG connector and the other end to one of the

PC’s serial ports (either COM1 or COM2).

NOTE

The CDU’s DIAG port is permanently set up for 9600 baud, 8 data bits, 1 stop
bit, and no parity. Set the PC serial port accordingly.

4. Turn ON power to the CDU. The CDU will automatically detect the presence of the serial cable

and indicate it is ready for Flash download by displaying “8.8.8.” on the Brake Pressure Display
with all other displays turned OFF.

5. On the PC, enter the load command for the Cab Unit Flash Loader as follows:

load -COM1 cdu.hex -r <Enter> if PC serial port 1 is being used;

load -COM2 cdu.hex -r <Enter> if PC serial port 2 is being used.

The PC will display the progress of the download process as follows:

Cab Unit Flash Loader (REV 1) Thu Jul 18 16:11:41 EDT 1996
Press a key at any time to quit this program.

Initiating target diagnostics:
Cab Unit Boot Prom (REV 1) Thu Jul 18 9:37:47 EDT 1996
ROM test PASSED
RAM test PASSED

Erasing flash ... done.
Writing to flash ... #### records downloaded.

6. Upon completion of the download, the CDU will begin running the new upgrade software in the

normal fashion just as it does on standard power-up.

7. Verify that the correct software revision is displayed on the CDU’s Function Menu Display during the

self test power-on sequence (e.g., “Version: REV 1”).

8. Unplug the serial cable from the DIAG connector. The CDU is now ready for operation.