Issue
What is the startup process for i2 and b3 controllers.
Product Line
Andover Continuum
Environment
- i2 Infinet controllers
- b3 BACnet MS/TP controllers
Cause
Startup and battery/ flash backup information required.
Resolution
On start-up an i2 or b3 controller will try to restart from the RAM if it contains valid data, programs continue from the last line, point values and logged data & alarms are retained.
If the RAM checksum is not valid or the RAM backup battery is not connected (tag not removed) then it will try to do a Cool Start, copying over the Flash memory to RAM and starting all programs from the first line. Logged data, current values and alarm status is lost.
You can check the validity of the flash memory using the ACCLastBackup and ACCStatusBackup, these should give the time/date of the last backup to flash and its current status e.g. backup valid or backup required.
Otherwise if there is no valid flash the controller will cold start and require a reload from Cyberstation.
