ST950S Plus+ Installation and Commissioning Manual
It may not be possible to update from the version for firmware running to the version desired. This is
only likely if the upgrade skips many intermediate firmware versions. In such cases it will be necessary
to perform the upgrade in two or more steps, first going to intermediate version before going to the final
desired version.
9.1.3. Immediate Implementation
For most “EFC-only” updates the update is implemented immediately and the EFC restarted. This will
cause the controller to enter Reserve State. The controller will leave Reserve State and the signals
return to their normal operation once the restart of the EFC is complete.
9.1.4. Delayed Implementation
Update of the Primary, SEC and Fail Flash always results in the signals going off so is not implemented
immediately but held until an appropriate time is determined by somebody on site. Some EFC only
changes might be considered extensive enough to also warrant an on-site presence. That an update is
pending in this manner is indicated by the following:
•
A status of “Update on Hold” reported on the System – Upgrade web page.
•
Entries in the Notification Table indicating how to proceed with or cancel the update.
•
The blue LED on the CPU board flashing with a double beat.
Important:
Power cycling the controller does not abort the upgrade as the upgrade is held pending across
a power cycle.
To proceed with this update, perform the following:
•
When safe to do so, turn off the signals using the signals on / off switch.
•
Press the programming button on the CPU board.
This action causes the EFC to reboot then program the Primary, SEC and Fail Flash (although if the
Fail Flash switch is in the ON position, the Fail Flash CPU will not be reprogrammed but continue to
flash the signals). On completion of this programming operation the blue LED on the CPU board stops
flashes quickly and remains on solid. At this point the update is completed by powering the controller
off then on.
CAUTION:
Firmware upgrade and programming will take several minutes. Do not power off/on until the
programming operation has completed and the blue LED remains on.
9.1.5. Initiating an Update
An update can be initiated through the web interface as follows.
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