F_CheckSum16

F_CheckSum16 1:

 

The function "F_CheckSum16" performs a 16 bit check sum of any data. 

FUNCTION F_CheckSum16 : WORD

VAR_INPUT
    dwSrcAddr   : DWORD;
    cbLen       : UDINT;
    wChkSum     : WORD;
END_VAR

dwSrcAddr: Address of data buffer.

cbLen: Length of data buffer.

wChkSum: Initial value = 0 or last check sum.

 

Requirements

Development environment

Target system type

PLC libraries to include

TwinCAT v2.8.0 Build > 735

PC or CX (x86)

TcUtilities.Lib

( Standard.Lib; TcBase.Lib; TcSystem.Lib are included automatically )

TwinCAT v2.10.0 Build >= 1301

CX (ARM)