Supported platforms: CODESYS 2.3, CODESYS 3.5

 

J1939_MessageChecksum (FUN)

Description

This function calculates a J1939 PGN message checksum according to the J1939 standard.

 

Inputs

Input variable name

Data type

Range

Description

i_CobID

DWORD

0-232

Message ID

i_MsgData

ARRAY [1..8] OF BYTE

 

Message data bytes

i_MessageCounter

BYTE

0-7, 15

Message counter value or 0x0F if not used

Output

Data type

Range

Description

BYTE

0-7

Message checksum

 

 

 

 

Source file topic000986.htm

Last updated 21-Feb-2025