Attention

These docs are a bit ambitious. The steps described are accurate but IronPLC cannot yet run programs.

P0029¶

The referenced type is declared by the IEC 61131-3 specification, however this compiler does not provide an implementation.

This error occurs when a standard library type is used that is not yet implemented in this compiler.

Example¶

The following code will generate error P0029:

FUNCTION_BLOCK DUMMY
VAR_INPUT
    name : TON;  (* Error: TON type not implemented *)
END_VAR
END_FUNCTION_BLOCK

The TON (Timer On Delay) type is part of the IEC 61131-3 standard library but is not yet implemented in this compiler.

To fix this error, use an alternative approach or wait for the type to be implemented:

FUNCTION_BLOCK DUMMY
VAR_INPUT
    name : BOOL;  (* Use a basic type instead *)
END_VAR
END_FUNCTION_BLOCK