B.6
SEL-551 Relay Instruction Manual Date Code 20110408
Firmware Upgrade Instructions
Flash Firmware Upgrades
Step 11. Issue the Send (SEN <Enter>) command to the relay to initiate
the firmware transfer from the relay to your computer. No
activity will be seen on the PC screen, because the relay is
waiting for the PC to request the first XMODEM data packet.
Step 12. Select the “Receive File” function with the XMODEM protocol
in your terminal emulation software.
Step 13. Give the file a unique name to clearly identify the firmware
version (e.g., 551_R500.S19). After the transfer, the relay will
respond:
Download completed successfully!
Step 14. Begin the transfer of the new firmware to the relay by issuing
the Receive (REC <Enter>) command to instruct the relay to
receive new firmware.
Step 15. The relay will ask if you are sure you want to erase the existing
firmware.
Step 16. Type Y to erase the existing firmware and load new firmware,
or just <Enter> to abort.
Step 17. The relay then prompts you to press a key and begin the
transfer.
Step 18. Press a key (e.g., <Enter>).
Step 19. Start the file transfer by selecting the “Send File” function in
your terminal emulation software. Use the XMODEM or
1k-XMODEM (fastest) protocol and send the file that contains
the new firmware (e.g., Relay.S19).
After the transfer completes, the relay will reboot and return to
Access Level 0. The following screen capture shows the entire
process.
=>>L_D <Enter>
Disable relay to send or receive firmware(Y/N) ? Y <Enter>
Are you sure (Y/N) ? Y <Enter>
Relay Disabled
!>SEN <Enter>
Download completed successfully!
!>REC <Enter>
Caution! - This command erases the relay's firmware.
If you erase the firmware, new firmware must be loaded into the relay
before it can be put back into service.
Are you sure you wish to erase the existing firmware? (Y/N)Y <Enter>
Erasing
Erase successful
Press any key to begin transfer, then start transfer at the PC <Enter>
Upload completed successfully. Attempting a restart
Step 20. The relay illuminates the EN front-panel LED if the original
relay settings were retained through the download.
Step 21. If the EN LED is illuminated, proceed to Step 23; otherwise, the
relay may display various self-test failures because of changes
in the way memory is used.
NOTE: If the relay power fails during
a firmware receive after the old
firmware is erased, the relay will
restart in SEL
BOOT, but the baud rate
will default to 2400 baud. (If this
happens, connect to the relay at 2400
baud and type BAUD 38400 at the
SEL
BOOT prompt. The firmware
receive can be started again at
Step 14.)
NOTE: The relay will display one or
more “C” characters as it waits for
your PC Terminal Emulation program
to send the new firmware. If you do
not start the transfer quickly enough
(within about 18 seconds), it may time
out and respond “Remote system is
not responding.” If this happens,
begin again in Step 14, above.
NOTE: The file transfer takes
approximately three minutes at
38,400 baud, using the 1k-XMODEM
protocol
.
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