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Siemens RXB Series Basic Documentation
Also see for QAX903: Mounting instructionsMounting and commissioning
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For internal use only 59 / 88Siemens KNX bus communications CE1P3127enBuilding Technologies Large plants 2013-04-088.2.5 System time, alarms, and remote time adjustmentThe system time (time and date) is communicated in S-Mode and not affected byLTE filtering.Alarms and remote time adjustments are transmitted in LTE-Mode (LTE broadcastaddress). This address is listed in the predefined LTE filter table and thereforesubject to LTE filtering.N146N140/13System time (time and date) S-modeLTE filter tableNormal (route)Route allBlock allAlarms, remote time adjustments, LTE-mode(e.g. Main line 1)Primary lineSekundary line(e.g. Line 1)3127Z20enThe diagram shows the following:The system time (time and date) is always transmitted by devices on the primaryline to devices on the secondary line and vice versa Æ two-way communication.If the filter is set to "Normal (route)" in the area/line couplers and IP routers, alarmsand remote time adjustments are transmitted only from the secondary line to theprimary line Æ one-way communication.If "Route all" is set, alarms and remote time adjustments are transmitted from thesecondary line to the primary line and vice versa Æ two-way communication."Block all" means that the transmission of alarms and remote time adjustments isblocked Æ no LTE telegram communications.In a network with couplers and IP routers, only one RM… controller can function astime master (see Section 6.1.2).The time can only be adjusted remotely via a time slave if the time master islocated on the same line or on the next higher line.System timeAlarms and remote timeadjustmentTwo-way and one-waycommunicationNormal (route)Route allBlock allTime synchronization |
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