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B.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.
B.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.
Power Cycling a Controller
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.
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.
B.1.5 Initiating an Update
An update can be initiated through the web interface as follows.
• Visit the System – Upgrade web page.
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