iectypes

IEC 61131-3 data types, enums, and type definitions for PLC programming.

Overview

This crate provides fundamental type definitions used across PLC programming tools:

• POU Types: Program, Function, FunctionBlock
• Variable Classes: Input, Output, InOut, Local, Temp, External, Global
• Data Types: Elementary types (BOOL, INT, REAL, etc.)

Usage

use iectypes::{PouType, VarClass, DataType};

let pou_type = PouType::FunctionBlock;
let var_class = VarClass::Input;

Types

PouType

Program Organization Unit types per IEC 61131-3:

• Program - Scheduled by tasks, has state
• Function - Stateless, returns a value
• FunctionBlock - Stateful, instantiated

VarClass

Variable classification:

• Input, Output, InOut - Interface variables
• Local, Temp - Internal variables
• External, Global - Shared variables
• Constant - Compile-time constants

DataType

Elementary IEC 61131-3 data types:

• Boolean: BOOL
• Integer: SINT, INT, DINT, LINT, USINT, UINT, UDINT, ULINT
• Real: REAL, LREAL
• String: STRING, WSTRING
• Time: TIME, DATE, TOD, DT
• Bit: BYTE, WORD, DWORD, LWORD

License

MIT