STRING max size and length type can now be overloaded (define STR_MAX_LEN and STR_LEN_TYPE before including iec_types.h)
IEC 61131-3 Annex F Examples (informative)
This directory contains example code take from:
Annex F of Draft 2nd edition of the IEC 61131-3 standard (1998)
"PROGRAMMABLE CONTROLLERS - PROGRAMMING LANGUAGES"