FieldServer Kahl HCS-R - Manual (Page 15)

FS-8700-127 Hanning & Kahl HCS-R Manual Page 15 of 17
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Appendix A. Reference
Appendix A.1. How Client Stores Data:
The HCS will be polled by an RDBC Map Descriptor and data will be stored in the DA_Current Data Array in the
following fashion if parameter HCSR_Data_Stages >1:
New data is stored as current data.
If data is changed, last current data is moved to 2 nd Stage, 2 nd Stage data is moved to 3 rd stage and 3 rd stage
data is lost.
When a vehicle has HCS-R equipment installed, Byte 7 (Status of the loop) is equivalent to the “From Loop (0),
On Loop (1) byte listed in Appendix A.1.1. The 20th offset will hold whether data is From Loop or On Loop. To
achieve this, the FieldServer should be configured to store On-Loop and From-Loop data in the same Data
Array. i.e. Map Descriptor Parameter HSCR_Onfrom should be set to Onfrom. Refer to Section 5.3.2
Appendix A.1.1. Data_Type is Ana_Input or not specified
Data Array Offset Description
Current Data
0 - 18 Data bits ( 0 - 1 )
19 Receipt ok ( 0 ), Disturbance ( 1 )
20 From Loop ( 0 ), On Loop ( 1 )
21 Loop Number (1,2,3,4) as integer
2 nd (Previous) Data
24 – 42 Data bits ( 0 – 1 )
43 Receipt ok ( 0 ), Disturbance ( 1 )
44 From Loop ( 0 ), On Loop ( 1 )
45 Loop Number (1,2,3,4) as integer
3 rd (Prior to previous) Data
48 – 66 Data bits ( 0 – 1 )
67 Receipt ok ( 0 ), Disturbance ( 1 )
68 From Loop ( 0 ), On Loop ( 1 )
69 Loop Number (1,2,3,4) as integer