Untitled - Uhlenbrock

7.3.1 General instruction descriptionMARCoFor the programming of switching operation the MARCo-Receiver has LNCVs 20 to 109available. By programming certain combinations of value into these LNCVs you can developexecutable instructions.A complete instruction always consists of three entries:• Vehicle address• Command value• Command optionsVehicle addressesAs addresses the following values can be used:LNCV Description0 No instruction is required to be present1-9999 Locomotive address; should the MARCo-Receiver recognize this address, theprogrammed instruction will be sent to this address by the Intellibox20001-20015Train category: shown in chapter 3.4, can be assigned in MARCo transmitter CV 115.This category value (1-4) becomes part of the vehicle address to be sent. If aninstruction is present for a recognized category, it is implemented for the particularvehicle address.The address 20001 corresponds to the category 1, address 20002 corresponds tocategory 2 etc.20000 Broadcast locomotive address: the programmed instruction is always implemented,independent of Vehicle address or categoryCommand value and command optionThe entries for command value and option depend on whether it is speed, function, orsolenoid instructions. While the address is simply taken from the above table, you also needto determine the numerical value for the command, or command option which is to be used.The advantage of the computed values is that single instructions can operate a number ofitems at the same time, or with a particular command option, different command variants canbe produced. This is explained further in following sections.7.3.2 Priorities in processing instructionsIn the respective groups, the programmed actions are sequentially processed in ascendingorder of LNCV numbers. In each group, instructions can be executed for the recognizedaddress, the recognized category, or broadcast to every vehicle. A specific vehicle can haveseveral instructions programmed.The different address formats have the following priorities:1. Highest priority: Address instructions (addresses 1-9999)2. Middle priority: Category instructions (addresses 20001-20015)3. Lowest priority: Broadcast instructions (address 20000)During the processing of a group of instructions in ascending order, every valid instruction isimmediately implemented. However, lower priority instructions will only be implemented solong as no suitable instruction of higher priority is found for the vehicle. Further instructionswith lower priority after that will not be implemented.Thus if a category instruction is found, further category instructions will be implemented, butbroadcast instructions will not. An address instruction results in further address instructionsbeing implemented, but no further category or broadcast instructions can be implemented.Example 1Locomotive 3 with the train category 1 (address 20001) arrives at the detector. The LNCVentries for the functions are programmed as follows:30