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Building Technologies Basic documentation: Communication via the KNX bus CE1P3127en
HVAC Products Contents 30.08.2007
8 Large plants............................................................................................77
8.1 Engineering and commissioning..............................................................77
8.1.1 Network topologies...................................................................................78
8.1.2 IP router as a coupler to the IP network...................................................81
8.2 LTE filter table for couplers and IP routers...............................................84
8.2.1 Filter settings............................................................................................84
8.2.2 Predefined LTE filter table........................................................................85
8.2.3 Filtering, zone addresses, communication areas ....................................86
8.2.4 LTE telegrams via couplers and IP routers..............................................87
8.2.5 System time, alarms and remote time adjustments.................................89
8.3 Engineering of large plants ......................................................................90
9 Appendix.................................................................................................93
9.1 Faults and errors......................................................................................93
9.1.1 Bus fault status message.........................................................................93
9.1.2 Communication errors..............................................................................94
9.2 Heating / cooling changeover ..................................................................95
9.2.1 Changeover via digital input.....................................................................96
9.2.2 Changeover via analog input ...................................................................97
9.2.3 Changeover based on calendar...............................................................98
9.2.4 H/C changeover relay and fault messages..............................................99
9.3 Room control combination .....................................................................100
9.3.1 Application examples.............................................................................100
9.4 Applications with zones..........................................................................104
9.4.1 Additional zones in the RXB/RXL room controller .................................105
9.5 Supply chains.........................................................................................106
9.5.1 Data exchange in LTE mode..................................................................108
9.6 Updating the process values..................................................................109
9.7 Lightning and overvoltage protection, EMC...........................................110
9.7.1 Lightning protection................................................................................110
9.7.2 Overvoltage protection...........................................................................113
9.7.3 Overvoltages in loops.............................................................................114
9.7.4 EMC protection management ................................................................115
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