Contents Menu Expand Light mode Dark mode Auto light/dark, in light mode Auto light/dark, in dark mode Skip to content
IronPLC - Open-Source IEC 61131-3 Toolchain
IronPLC - Open-Source IEC 61131-3 Toolchain
  • Quick start
    • Installation
    • How a PLC Program Works
    • Your First Program
    • Configuring Your Application
    • Working with Multiple Files
    • Connecting to Hardware
  • How-to guides
    • Getting Started
      • Check, Compile, and Run from the CLI
      • Structure a Multi-File Project
      • Read Compiler Error Messages
    • Coming from Beremiz
      • Check Beremiz Projects
    • Coming from TwinCAT
      • Check TwinCAT 3 Projects
    • Using AI Agents
      • Write PLC Programs with an AI Agent
    • Update IronPLC on your computer
    • Troubleshoot the Editor Extension
  • Explanation
    • What is IEC 61131-3?
    • IronPLC and the IEC 61131-3 Ecosystem
    • Structured Text Basics
    • Program Organization
    • Execution Cycle
    • Variables and I/O
    • References and Indirection
    • Type Conversions
    • Enabling Dialects and Features
  • Reference
    • Language
      • Edition Support
      • Data Types
        • BOOL
        • SINT
        • INT
        • DINT
        • LINT
        • USINT
        • UINT
        • UDINT
        • ULINT
        • REAL
        • LREAL
        • BYTE
        • WORD
        • DWORD
        • LWORD
        • STRING
        • WSTRING
        • TIME
        • LTIME
        • DATE
        • LDATE
        • TIME_OF_DAY
        • LTIME_OF_DAY
        • DATE_AND_TIME
        • LDATE_AND_TIME
        • Enumerated Types
        • Subrange Types
        • Array Types
        • Structure Types
        • Reference Types
      • Variables
        • Variable Declarations
        • I/O Qualifiers
        • Variable Scope
        • Retention
        • Initial Values
      • Program Organization Units
        • PROGRAM
        • FUNCTION
        • FUNCTION_BLOCK
        • CONFIGURATION
        • RESOURCE
        • TASK
      • Structured Text
        • Assignment
        • Bit Access
        • IF
        • CASE
        • FOR
        • WHILE
        • REPEAT
        • EXIT
        • RETURN
        • Arithmetic Operators
        • Comparison Operators
        • Logical Operators
        • Function Call
      • Ladder Diagram
        • Rungs
        • Contacts
        • Coils
        • Branches
    • Standard Library
      • Functions
        • ABS
        • SQRT
        • LN
        • LOG
        • EXP
        • EXPT
        • SIN
        • COS
        • TAN
        • ASIN
        • ACOS
        • ATAN
        • ADD
        • SUB
        • MUL
        • DIV
        • MOD
        • MOVE
        • GT
        • GE
        • EQ
        • LE
        • LT
        • NE
        • SEL
        • MAX
        • MIN
        • LIMIT
        • MUX
        • SHL
        • SHR
        • ROL
        • ROR
        • LEN
        • LEFT
        • RIGHT
        • MID
        • CONCAT
        • INSERT
        • DELETE
        • REPLACE
        • FIND
        • ADD_TIME
        • SUB_TIME
        • MUL_TIME
        • DIV_TIME
        • ADD_DT_TIME
        • ADD_TOD_TIME
        • SUB_DT_TIME
        • SUB_TOD_TIME
        • SUB_DT_DT
        • SUB_DATE_DATE
        • SUB_TOD_TOD
        • CONCAT_DATE_TOD
        • DT_TO_DATE
        • DT_TO_TOD
        • Type Conversions
        • TRUNC
        • BCD_TO_INT / INT_TO_BCD
      • Function Blocks
        • TON
        • TOF
        • TP
        • CTU
        • CTD
        • CTUD
        • R_TRIG
        • F_TRIG
        • SR
        • RS
    • Extension Library
      • Functions
        • SIZEOF
      • Function Blocks
      • Variables
        • System Uptime
    • Compiler
      • Overview
      • Command Reference
      • Source Formats
        • Text
        • PLCopen XML
        • TwinCAT
      • Problem Code Index
        • P0001
        • P0002
        • P0003
        • P0004
        • P0005
        • P0006
        • P0007
        • P0008
        • P0009
        • P0010
        • P0011
        • P2001
        • P2002
        • P2003
        • P2004
        • P2005
        • P2006
        • P2007
        • P2008
        • P2009
        • P2010
        • P2011
        • P2012
        • P2013
        • P2014
        • P2015
        • P2016
        • P2017
        • P2019
        • P2020
        • P2021
        • P2022
        • P2023
        • P2024
        • P2025
        • P2026
        • P2027
        • P2028
        • P2029
        • P2030
        • P2031
        • P2032
        • P2033
        • P2034
        • P2035
        • P2036
        • P4001
        • P4002
        • P4003
        • P4004
        • P4005
        • P4006
        • P4007
        • P4008
        • P4009
        • P4010
        • P4011
        • P4012
        • P4013
        • P4014
        • P4015
        • P4016
        • P4017
        • P4018
        • P4019
        • P4020
        • P4021
        • P4022
        • P4023
        • P4024
        • P4025
        • P4026
        • P4027
        • P4028
        • P4029
        • P4030
        • P4031
        • P4032
        • P4033
        • P6001
        • P6002
        • P6003
        • P6004
        • P6005
        • P6006
        • P6007
        • P6008
        • P8001
        • P9001
        • P9002
        • P9003
        • P9998
        • P9999
    • Runtime
      • Overview
      • Command Reference
      • Error Codes
        • V4001
        • V4002
        • V4003
        • V4004
        • V4005
        • V6001
        • V6002
        • V6003
        • V6004
        • V6005
        • V6006
        • V6007
        • V9001
        • V9002
        • V9003
        • V9004
        • V9005
        • V9006
        • V9007
        • V9008
        • V9009
        • V9010
        • V9011
        • V9012
    • Editor Extension
      • Overview
      • Build Tasks
      • Bytecode Viewer
      • Settings
      • Problem Code Index
        • E0001
        • E0002
        • E0003
Back to top
View this page
Edit this page

Attention

IronPLC supports IEC 61131-3 Structured Text excluding I/O mapping.

Problem Code IndexΒΆ

  • V4001
  • V4002
  • V4003
  • V4004
  • V4005
  • V6001
  • V6002
  • V6003
  • V6004
  • V6005
  • V6006
  • V6007
  • V9001
  • V9002
  • V9003
  • V9004
  • V9005
  • V9006
  • V9007
  • V9008
  • V9009
  • V9010
  • V9011
  • V9012
Next
V4001
Previous
ironplcvm
Copyright © 2023-2026, Garret Fick
Made with Sphinx and @pradyunsg's Furo