Appendix A.5. Bacnet State Text Preload; Appendix A.5.1. Method 1 - Using An Offset/User Table; Appendix A.5.2. Method 2 - Using A Single Data Array - SMC Networks FieldServer FS-8700-16 BACnet PTP Driver Manual

Appendix A.5. BACnet State Text Preload

BACnet Multistate Objects have a State_Text property. This property is defined as an array of character
strings representing descriptions of all possible states of the Present_Value. The number of descriptions
matches the number of states defined in the Number_Of_States property. The Present_Value, interpreted
as an integer, serves as an index into the array.
When Multistate Objects are configured on a BACnet Server it is necessary to define the State_Text
property. This section illustrates how to define the State_Text character strings and how to associate
these definitions with Multistate Server Map Descriptors.
The maximum permitted length of any State_Text string is 50 characters.
Appendix A.5.1. Method 1 – Using an Offset/User Table
//set up a look up table
Offset_Table
Offset_Table_Name
FIRE_ALRM_TEXT
FIRE_ALRM_TEXT
FIRE_ALRM_TEXT
FIRE_ALRM_TEXT
FIRE_ALRM_TEXT
FIRE_ALRM_TEXT
Data_Arrays
Data_Array_Name , Data_Format
DA_MI_01 , UINT16
Map_Descriptors
Map_Descriptor_Name , Data_Array_Name
CMD_MI_01 , DA_MI_01
, Data_Type , Object_ID
, MI , 1
Appendix A.5.2. Method 2 – Using a Single Data Array
Data_Arrays
Data_Array_Name , Data_Format
DA_MI_01 , UINT16
DA_STATE_TXT , BYTE
Preloads
Data_Array_Name , Preload_Data_Value
DA_STATE_TXT , MyState1 MyState2 MyState3
MyState4 MyState5 MyState6
Map_Descriptors
Map_Descriptor_Name , Data_Type , Object_ID , Function , Data_Array_Name , Node_Name , Length , State_Text_Array
CMD_MI_01 , MI
, Table_String , Table_Index_Value
, SYSTEM READY , 1
, ALARM , 2
, MAINTENANCE , 3
, OFF-LINE , 4
, IN SERVICE , 5
, OTHER , 6
, Data_Array_Length
, 100
, Data_Array_Offset
, 0
, Length , State_Text_Array
, 1 , Fire_Alrm_Text
, Data_Array_Length
, 100
, 200
, Preload_Data_Format , Preload_Data_Index
, String
, 1 , Passive
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, Function , Node_Name
, Passive , N1 11
, 0
, DA_MI_01 , N1 11
Valid values are 1
to 16.
, 1 , Da_State_Txt