FB_IEC870_5_101TProtocol

From product version:  TwinCAT PLC Library IEC60870-5-101 Substation v2.0.2 and higher

FB_IEC870_5_101TProtocol 1:

The FB_IEC870_5_101TProtocol communication block implements the transmission procedures of the connection layer according to IEC 60870-5-1 and  IEC 60870-5-2 standard. In the event of a protocol error an associated error code is issued at the function block output and the data transfer is interrupted. The data exchange can be reactivated by calling the INIT task. E.g. the TX/RX data buffers are reset. The communication block expects a TX/RX data buffer variable and a connection handle to FB_IEC870_SerialLineCtrl. These variablen must be transferred to the block via VAR_IN_OUT.

The function block features the following tasks:

Protocol configuration

The communication block has a structured protPara variable. Protocol parameters such as timeout times or connection addresses etc. can be configured via this variable

VAR_IN_OUT

VAR_IN_OUT
    hSerial     : T_HSERIALCTRL;           (* Serial link control handle *)
    buffer      : ST_IEC870_5_101TBuffer; (* TX/RX data buffer *)
END_VAR

hSerial: Connection handle to FB_IEC870_SerialLineCtrl.. The data to be sent and received are excahged with the FB_IEC870_SerialLineCtrl function block.

buffer: TX/RX data buffer.

VAR_INPUT

VAR_INPUT
    protPara    : ST_IEC870_5_101ProtocolParams; (* IEC60870-5-101 protocol parameters *)
    bOutDbg     : BOOL;       (* Enable/disable debug output *)
END_VAR

protPara: IEC60870-5-101protocol parameters

bOutDbg:: Activates/deactivates the debug output of the frames in the TwinCAT System Manager logger view.

VAR_OUTPUT

VAR_OUTPUT
    bError      : BOOL;
    nErrID      : UDINT;
    eDTState    : E_IEC870_5_101SerialLinkState := eSERIALLINK_DISCONNECTED; (* Data transfer state *)
ND_VAR

bError: This output is switched to TRUE if an error occurs during data transfer.

nErrID: Returns an error code if the bError output is set;

eState: status of the data exchange to the master

 

Example:

Sample projects: IEC60870-5-101 Serial Link Interface

 

Requirements

Development Environment

Target System Type

PLC Libraries to include

TwinCAT v2.10.0 Build >= 1301

PC or CX (x86)
CX (ARM)

TcIEC870_5_101Link.Lib

( Standard.Lib; TcBase.Lib; TcSystem.Lib; TcUtilities.Lib; TcIEC870_5_101.Lib; COMlibV2.Lib; are included automatically  )

 

See also