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4.5.5.Map Descriptor Example 1. - Read Point Status
ThisMapDescriptorcanbeusedtopollforthesta tusofaparticularpoint.Whentheresponseisob tainedthedriversetsthevalue ofoneDataArrayelementtoanumberindicatingth epoint’sstatus.ThevaluesaredescribedinAppe ndixA.4.Youneedonesuch MapDescriptorforeverypointwhosestatusyouwis htopoll.NotesinAppendixA.13providemoreinfo rmation
Map_Descriptor_Name, | Data_Array_Name, | Data_Array_Offset, | Function, | Node_name | Length | Scan_Interval, | sim4100_func | sim4100_card, | sim4100_point, | sim4100_sub |
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A1, | DA_AI3, | 0, |
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TheData | Thedatais |
| Thisidentifier |
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extractedfrom | writtenintothe | mustbethesame |
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Simplexprotocol | ListStatus'Functionto | SimplexDevice:Sub Point | ||||||||||||
thedeviceis | arraystartingat | asthenodename | ||||||||||||
unlessthe |
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placedinthis | thisposition.A | usedtoidentify |
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driver | valueofzerois | theportconnected | SimplexDevice:Point | |||||||||||
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independent | equivalenttothe | totheSimplex |
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dataarray. | firstposition. |
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returneddatais describedinAppendixA
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