F_iecApdu101ToAsduLen

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

F_iecApdu101ToAsduLen 1:

The function calculates for the  IEC 60870-5-101 protocol the maximum available ASDU byte length with the configurated  frame and link address field length. The maximum available ASDU length is for example required for the configuration of the  ST_IEC870_5_101T buffer variable. This data structure (TX/RX data buffer) is used for the data exchange via the IEC60870-5-101 Serial Link Interface.

FUNCTION F_iecApdu101ToAsduLen: BYTE

VAR_INPUT
    FRAMELength     : BYTE;
    eLinkAddrSize   : E_IEC870_5_101LinkAddrSize;
END_VAR

FRAMELength : Max. available frame length (see compatibility list).

eLinkAddrSize: Link address field octet length (see compatibility list).

Requirements

Development Environment

Target System Type

PLC Libraries to include

TwinCAT v2.9.0 Build >= 1030

PC oder CX (x86)

TcIEC870_5_101Link.Lib

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

TwinCAT v2.10.0 Build >= 1301

CX (ARM)

See also