User Manual

SGD-SB2025NT-TUM, Part 2
Jan 12 Page 83 TROUBLESHOOTING & MAINT
Note.
The ET cannot be used at the same time as the Loader software as they use the same
com port on the equipment.
Run the Loader application and “Connect” to the equipment in exactly the same way as for the ET.
Follow the help guidelines for using the ET in Section 1.3 . The current Firmware version will be
reported once the connection is established.
Figure 70. Loader Application.
On the Loader application window, select the ‘Load’ button and an Open file window will be
displayed from which the folder and file may be selected; only filenames with the ‘hex’ extension
will be displayed. Navigate to and select the correct file and, on the Open file window, select the
‘Open’ button to prime the file loading. On the Loader application window, select the ‘Start’ button
to commence loading the selected file. The progress bar indicates the time to completion.
11.2.3 Traffic Manager
The TM will continue to operate normally during an up-issue. When the firmware upload is
complete the TM will restart automatically and will be running the new software within a few
seconds. Occasionally, adding new features will necessitate changing the format of the stored
configuration data, therefore, the existing stored data may not match the requirement of the new
firmware and, consequently, may need to be re-entered using the ET application. If this is going to
be necessary, suitable notification will be given in the Engineering Bulletin that accompanies all
software releases.
If operating a Solar network with duplicated TMs, it is essential that both TMs are upgraded to the
same software version. During the upgrade process it would be prudent to ensure that only one of
the TMs is operating at a time. This will prevent the situation arising when both TMs try to run the
network, which might occur after the first TM is upgraded and before the second TM is brought up
to the same version of software. Again, suitable advise of the potential for this situation arising will
be provided in the associated Engineering Bulletin.
11.2.3.1 Invalid TM firmware
When a new firmware file is offered to a TM, the TM will check the file to ensure that it is valid TM
firmware and a file that fails this check will be rejected. This check is very comprehensive so it
would be extremely unlikely that an invalid file would be loaded. Once the file check test has been
passed, the loading process will commence and each byte is checked against a checksum and
again once the whole file is loaded. Only at this stage would the file be used to replace the existing
firmware.