Struct MockPlc 

pub struct MockPlc { /* private fields */ }

The mock driver of one PLC.

Implementations

impl MockPlc

pub fn new(cfg: &PlcConfig, state: Arc<MockState>) -> Result<Self, String>

The driver of a PLC, serving its mock_tags file (no tags without one).

pub fn state(&self) -> &Arc<MockState>

The state this driver shares.

Trait Implementations

impl Plc for MockPlc

fn open(&mut self) -> Result<(), String>

Connects (and uploads the tag definitions).

fn close(&mut self)

Disconnects; errors are ignored.

fn read(&mut self, tags: &[&str]) -> Result<Vec<TagResult>, String>

Reads tags in one call, one result per tag in order.

fn write(&mut self, tag: &str, value: &Value) -> Result<TagResult, String>

Writes one tag; a value that doesn’t fit is the result’s bad_value error, nothing sent.

fn catalog(&mut self) -> Catalog

The controller structure, after a connect and after the tag table version changed.

fn version(&mut self) -> Json

The tag table version (null when unknown); it changes after an online edit or a download.

fn connection_size(&self) -> usize

Request and reply bytes per packet.

fn describes(&self) -> bool

Whether the driver reads controller descriptions; without them no tag gets one (the mock has none).

fn descriptions(&mut self, tags: &[&str]) -> Result<Vec<Option<String>>, String>

The controller descriptions of tags, None for each the controller has none of (or can’t tell).