PLC Programming

Appendix J: Compiler Errors and Warnings
The SFC POU is corrupt, possibly due to any export-import actions.
4375
"Transition expected instead of step ''"
The SFC POU is corrupt, possibly due to any export-import actions.
4376
"Step expected after transition ''"
The SFC POU is corrupt, possibly due to any export-import actions.
4377
"Transition expected after step ''"
The SFC POU is corrupt, possibly due to any export-import actions.
4400
Import / conversion of POU '' contains errors resp. is not complete."
The POU cannot be converted to IEC 61131-3 completely.
4401
"S5 time constant seconds is too big (max. 9990s)."
There is no valid BCD coded time in the accu.
4402
"Direct access only allowed on I/Os."
Make sure that you only access variables which are defined as input or output.
4403
"STEP5/7 instruction invalid or not convertible to IEC 61131-3."
Some STEP5/7 commands are not convertable ato IEC 61131-3, e.g. CPU commands like MAS.
4404
"STEP5/7 operand invalid or not convertible to IEC 61131-3."
Some STEP5/7 operands are not convertable ato IEC 61131-3 respectively an operand is missing.
4405
"Reset of a STEP5/7 timer cannot be converted into IEC 61131-3."
The corresponding IEC timer have no reset input.
4406
"STEP5/7 Counter constant out of range (max. 999)."
There is no valid BCD coded ckounter constant in the accu.
4407
"STEP5 instruction not convertible to IEC 61131-3."
Some STEP5/7 instructions cannot be converted to IEC 61131-3, e.g. DUF.
4408
"Bit access of timer or counter words not convertible into IEC 61131-3."
CoDeSys V2.3 10-129