User Guide

FS-8700-127 Hanning & Kahl HCS-R Manual Page 15 of 17
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Appendix A. Advanced Topics
Appendix A.1. 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.
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
Appendix A.1.2. Data_Type is Digi_Input
Data Array Offset (Say 0) Description
Current Data
0 - 18 Data bits ( 0 - 1 )
19 Receipt ok ( 0 ), Disturbance ( 1 )
20 From Loop ( 0 ), On Loop ( 1 )
21,22,23 3 bits for Loop Number
Offsets
21 22 23
1 0 0 –Loop 1
0 1 0 –Loop 2
1 1 0 –Loop 3
0 0 1 –Loop 4
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) in 3 bits as above
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) in 3 bits as above