F_DATA_TO_CRC16_CCITT

F_DATA_TO_CRC16_CCITT 1:

The function "F_DATA_TO_CRC16_CCITT" can be used to determine a 16-bit CRC CCITT (cyclic redundancy check) for any data. Internally the function F_BYTE_TO_CRC16_CCITT is used.

Further information on the algorithm used can be found in the documentation for the F_BYTE_TO_CRC16_CCITT function.

FUNCTION F_DATA_TO_CRC16_CCITT: WORD

VAR_INPUT

VAR_INPUT
    pData  : POINTER TO BYTE;(* Pointer to first data byte *)
    cbData : UDINT;(* Length of data *)
    crc    : WORD;(* Initial value (16#FFFF or 16#0000) or previous CRC-16 result *)
END_VAR

pData: Address of the data buffer.

cbData: Length of the data buffer.

crc: Initial value = 16#FFFF or 16#0000 or the last CRC.

Requirements

Development environment	Target platform	PLC libraries to be integrated (category group)
TwinCAT v3.1.0	PC or CX (x86, x64, ARM)	Tc2_Utilities (System)