FB_IEC870_5_104Slave

VAR_IN_OUT

VAR_IN_OUT
    hServer: T_HSERVER;
END_VAR

hServer : TCP/IP server handle. The internal parameters of the server handle variable first have to be initialized via the F_CreateServerHnd function.

VAR_INPUT

VAR_INPUT
    protPara    : ST_IEC870_5_104ProtocolParams;                           (* IEC60870-5-104 protocol communication params *)
    sysPara     : ST_IEC870_5_101SystemParams;                     (* IEC60870-5-104 slave system params *)
    pAOEntries  : POINTER TO ARRAY[0..IEC870_ANYSIZE_ARRAY] OF ST_IEC870_5_101AODBEntry;    (* Pointer to the first element of application database object array *)
    cbAOEntries : UDINT;  (* Byte size (length) of application database object array *)
    pInputs     : POINTER TO ARRAY[0..IEC870_ANYSIZE_ARRAY] OF BYTE;
    cbInputs    : UDINT;
    pOutputs    : POINTER TO ARRAY[0..IEC870_ANYSIZE_ARRAY] OF BYTE;
    cbOutputs   : UDINT;
    pMemory     : POINTER TO ARRAY[0..IEC870_ANYSIZE_ARRAY] OF BYTE;
    cbMemory    : UDINT;
    pData       : POINTER TO ARRAY[0..IEC870_ANYSIZE_ARRAY] OF BYTE;
    cbData      : UDINT;
    bEnable     : BOOL := TRUE;
END_VAR

protPara: IEC60870-5-104 protocol parameter.

sysPara: system parameter.

pAOEntries: address of the application object database variable.

cbAOEntries: byte size of the application object database variable.

pInputs: address of the PLC process data area for the inputs.

cbInputs: byte size of the PLC process data area for the inputs.

pOutputs: address of the PLC process data area for the outputs.

cbOutputs: byte size of the PLC process data area for the outputs.

pMamory: address of the PLC process data area for the flags.

cbMamory: byte size of the PLC process data area for the flags.

pData: address of the PLC data area.

cbData: byte size of the PLC data area.

bEnable :activates/deactivates the function block (communication and connection).

VAR_OUTPUT

VAR_OUTPUT
    system      : ST_IEC870_5_104SystemInterface;
    eConnState  : E_SocketConnectionState      := eSOCKET_DISCONNECTED;  (* TCP/IP connection state *)
    eDTState    : E_IEC870_5_104DataTransferState  := eIEC870_STOPDT;    (* IEC60870-5-104 data transfer state *)
END_VAR

system: system interface. This variable is used by other IEC application functions as a communication interface for the IEC device (here: substation).

• Member variable system.device is expected by the F_iecSetAOQuality function as VAR_IN_OUT parameter, for example.
• Member variable system.device.errors is a device error FIFO. The PLC application can read and analyze registered errors.

eConnState: status of the TCP/IP connection with the master.

eDTState: status of the IEC60870-5-104 data exchange (STARTDT, STOPDT)

Example:

Example projects: IEC60870-5-104 controlled station

Call in FBD:

PROGRAM test
VAR
    AODB            : ARRAY[0..49] OF ST_IEC870_5_101AODBEntry;
    inputs AT%IB0   : ARRAY[0..999] OF BYTE;
    outputs AT%QB0  : ARRAY[0..999] OF BYTE;
    memory AT%MB0   : ARRAY[0..999] OF BYTE;
    data        : ARRAY[0..999] OF BYTE;

    hServer         : T_HSERVER;
    server      : FB_IEC870_5_104Slave;


    bEnable         : BOOL := TRUE;
    protPara    : ST_IEC870_5_104ProtocolParams;
    sysPara         : ST_IEC870_5_101SystemParams := ( asduAddr := 7 );
    eConnState      : E_SocketConnectionState;
    eDTState    : E_IEC870_5_104DataTransferState;
    bError      : BOOL;
    iecError    : ST_IEC870_5_101ErrorFifoEntry;
END_VAR

In the following structured text example the device error FIFO is read cyclically, and the registered errors are written into the Windows Application Log.

REPEAT
    server.system.device.errors.RemoveError( getError=>iecError, bOk=>bError );
    IF bError THEN
        ADSLOGSTR( ADSLOG_MSGTYPE_ERROR OR ADSLOG_MSGTYPE_LOG, 'IEC60870-5-101 slave error: 0x%s', DWORD_TO_HEXSTR( iecError.nErrId, 8, FALSE) );
    END_IF
UNTIL NOT bError
END_REPEAT

Requirements