ST_IEC870_5_101HashTableKey
Application object database lookup key. The key can be used for locating and modifying the hash table entries.
Syntax
TYPE ST_IEC870_5_101HashTableKey :
STRUCT
eType : E_IEC870_5_101TcTypeID := ASDU_TYPEUNDEF;
asduAddr : DWORD := 0;
objAddr : DWORD := 0;
group : DWORD := 0;
lookup : DWORD := IEC870_LOOKUP_KEY_ALL_ON;
END_STRUCT
END_TYPEeType: IEC 60870-5-101/104 ASDU type ID (e.g.: M_SP_NA_1 for single-point or M_DP_NA_1 for double point etc.).
asduAddr: Common ASDU address (CAA).
objAddr: Information object address (IOA).
group: Object group configuration flags. The flags can be combined with an OR operation. If this parameter is null the group parameters are ignored.
lookup: Additional lookup key parameters. The available parameters are declared as constants (see table below). They can be combined with an OR operation.
Constant | Value | Description |
|---|---|---|
IEC870_LOOKUP_KEY_ALL_ON | 0 | All parameters are considered in the search (eType, asduAddr, objAddr, group). |
IEC870_LOOKUP_KEY_TYPE_OFF | 1 | The eType parameter is ignored in the search. |
IEC870_LOOKUP_KEY_ASDUADDR_OFF | 2 | The asduAddr parameter is ignored in the search. |
IEC870_LOOKUP_KEY_GROUP_OFF | 4 | The group parameter is ignored in the search. |
IEC870_LOOKUP_KEY_OBJADDR_OFF | 8 | The objAddr parameter is ignored in the search. This parameter is not recommended because all data points must be identifiable via a unique object address. |
Sample in ST:
See function description: F_iecLookupTableEntry, F_iecRemoveTableEntry, F_iecGetPosOfTableEntry.
Requirements
|
Development environment |
Target system type |
PLC libraries to be linked (category group) |
|---|---|---|
|
TwinCAT v3.1.4012.0 |
PC oder CX (x86, x64, ARM) |
Tc2_IEC60870_5_10x (Communication->IEC60870) |