This is the explanation of AOP logic in Mark VIe system. the logic implemented is in ladder logic. so this video gives the brief idea about ladder logic also. watch the complete video. Team Instrumentation & Control.
Try this. Right click on any graphics page. Click on "regional setting". Select the "Metric" instead of "US" then all units will display in metric system.
Your TK fans logic is ready and uploaded today. 45FTX is fire protection trip which is derived from all zones. If any zone detects fire at that time this bit will be true, GT will trip and initial & extended fire line will come in action for that perticular zone.