Type element

Defines the CRC calculation algorithm.

Type

EnumParamCRCType

Parent

CRC

Attributes

Name	Type	Required	Description
byteoffset	int		Allows to add an offset to every single byte of the CRC.
groupbytes	string		Specifies the number of bytes on which to perform the operation.
mod	unsignedInt		Specifies that a modulo operation has to be performed on the CRC after it has been calculated.
off	int		Specifies an offset value to be added to the calculated CRC.
options	string		Specifies additional options, separated by semicolons (”;”).
totaloffset	unsignedInt		Specifies an offset value to be added to the CRC after it has been calculated.

Remarks

One of the following values can be specified:

• 2COMP
• CODAN
• CRC
• CRC-CCITT
• CRC-16
• EXOR
• FLETCHER
• LSB AFTER SUBTRACT
• LSB AFTER SUM
• MODBUS
• RCDS
• REST
• SUBTRACT
• SUM

Internal calculation sequence

1. Byteoffset
2. CRC (with groupbytes and off attributes if specified)
3. Mod
4. Totaloffset (added or ‘OR’-ed, depending on the ‘OR TOTALOFFSET’ option)
5. Ones complement