Map Descriptor Example: Read Data - FieldServer Hanning FS-8700-127 Driver Manual

FS-8700-127 Hanning & Kahl HCS-R Manual
5.4

Map Descriptor Example: Read Data

RDBC Map Descriptors are used to poll for data, Passive_Client Map Descriptors are used to store the data for various loops. Refer to Appendix A.1 for data
storage format.
Map_Descriptors
Map_Descriptor_Name , Data_Array_Name
CMD_DI_HCSR_01 , DA_CURRENT
Map_Descriptors
Map_Descriptor_Name Data_Array_Name
CMD_FromLoop_01 DI_FromLoop01
CMD_OnLoop_01 DI_OnLoop01
CMD_FromLoop_02 DI_FromLoop02
CMD_OnLoop_02 DI_OnLoop02
CMD_FromLoop_03 DI_FromLoop03
CMD_OnLoop_03 DI_OnLoop03
CMD_FromLoop_4 DI_FromLoop04
CMD_OnLoop_04 DI_OnLoop04
Data Array name
Starting offset
defined in
in Data Array to
Section 4
hold data
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Function must be RDBC to
enable polling.
, Data_Array_Offset , Function
, 0 , RDBC
Data_Array_Offset Function
0 Passive_Client
0 Passive_Client
0 Passive_Client
0 Passive_Client
0 Passive_Client
0 Passive_Client
0 Passive_Client
0 Passive_Client
Passive_Client Map
Descriptors are used to
store data returned by
response.
Page 9 of 17
The CMD_DI Map Descriptor polls
HCS-R Node_A every 5 seconds.
, Node_name , Length , Scan_Interval
, Node_A , 22 , 5
Node_name Length HCSR_Onfrom
Node_A 21 From
Node_A 21 On
Node_A 21 From
Node_A 21 On
Node_A 21 From
Node_A 21 On
Node_A 21 From
Node_A 21 On
Maximum number of
placeholders for data storage.
HCSR_Loop
1
1
2
2
3
3
4
4