Struct BlockData 

pub struct BlockData {
    pub block_type: u16,
    pub block_number: u16,
    pub format: u16,
    pub total_length: u32,
    pub flags: u16,
    pub crc1: u16,
    pub crc2: u16,
    pub payload: Vec<u8>,
}

A raw PLC block in the Siemens Diagra upload/download format.

The wire format starts with a 20-byte header:

[blk_type:2][blk_number:2][format:2][length:4][flags:2][crc1:2][crc2:2][??:4]

followed by the MC7 code / data payload, and optionally trailer strings.

Fields

block_type: u16

Block type identifier (see BlockType discriminants).

block_number: u16

Block number.

format: u16

Block format/encoding version.

total_length: u32

Total block length (including header).

flags: u16

Block flags.

crc1: u16

First CRC value.

crc2: u16

Second CRC value.

payload: Vec<u8>

Raw MC7 code / data payload (everything after the 20-byte header).

Implementations

impl BlockData

pub fn from_bytes(data: &[u8]) -> Option<Self>

Parse raw uploaded bytes into a BlockData.

pub fn to_bytes(&self) -> Vec<u8>

Serialize back to wire bytes (for download).

Trait Implementations

impl Clone for BlockData

fn clone(&self) -> BlockData

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BlockData

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.