F_iecRemoveTableEntry

Syntax

FUNCTION F_iecRemoveTableEntry: UDINT
VAR_INPUT
    key     : ST_IEC870_5_101HashTableKey;
END_VAR
VAR_IN_OUT
    hTable  : T_HAODBTable;
ENd_VAR

Inputs

key: Lookup key.

Inputs/outputs

hTable: Application object database handle (hash table handle). The table handle must be initialized once with the function F_iecCreateTableHnd before it can be used.

Return value

Sample in ST

Three hash table entries are removed from the application database. The associated data points have already been configured as hash table entries. See function description: F_iecAddTableEntry.

PROGRAM P_RemoveEntry
VAR_IN_OUT
    hTable  : T_HAODBTable;
END_VAR

VAR
    key     : ST_IEC870_5_101HashTableKey;
    bRemove : BOOL;
    nError  : UDINT;
END_VAR

IF bRemove THEN
    bRemove      := FALSE;

    key.eType    := M_SP_NA_1;
    key.asduAddr := 11;
    key.objAddr  := 100;
    key.group    := IEC870_GRP_INRO1;
    key.lookup   := IEC870_LOOKUP_KEY_ALL_ON;
    nError       := F_iecRemoveTableEntry( key := key, hTable := hTable );
    IF nError <> 0 THEN
        RETURN;
    END_IF

    key.eType    := M_DP_NA_1;
    key.asduAddr := 11;
    key.objAddr  := 200;
    key.group    := IEC870_GRP_INROGEN;
    key.lookup   := IEC870_LOOKUP_KEY_ALL_ON;
    nError       := F_iecRemoveTableEntry( key := key, hTable := hTable );
    IF nError <> 0 THEN
        RETURN;
    END_IF

    key.eType    := M_IT_NA_1;
    key.asduAddr := 11;
    key.objAddr  := 800;
    key.group    := IEC870_GRP_REQCOGEN;
    key.lookup   := IEC870_LOOKUP_KEY_ALL_ON;
    nError       := F_iecRemoveTableEntry( key := key, hTable := hTable );
    IF nError <> 0 THEN
        RETURN;
    END_IF
END_IF

Requirements