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KUKA Error 2020 — EXTERNAL FUNCTION EXPECTED, SUBPROGRAM FOUND

Displayed as KSS02020 on KRC4 / KRC5 controllers

KUKA 2020 (“EXTERNAL FUNCTION EXPECTED, SUBPROGRAM FOUND”): A function has been declared as external. First check: Modify the program.

Updated 2026-09-09 · LogrobotLM reference

Cause

A function has been declared as external. However, a subprogram with the same name was found. Example: DEF Test(x:IN) INT x ... ENDDEF P() EXTFCT INT Test(INT:IN) END

Effect

The program is not executable.

Troubleshooting

Modify the program. Example: DEFFCT INT Test(x:IN) INT x ... ENDFCTDEF P() EXTFCT INT Test(INT:IN) END

Related codes

2019EXTERNAL SP EXPECTED, FUNCTION FOUND2021THE DATA LIST IS NOT OF TYPE 'PUBLIC'2018EXTERNAL SP DECLARED BUT NOT USED2017SYNTAX ERROR IN THE P_PATH

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