Rockwell Automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User Manual - Manual (Page 212)

API Library of Routines
Appendix B
DTL_UNDEF
B-81
BASIC Example
The BASIC function code is 3.
procedure COPRO
DIM status : INTEGER
DIM analog : INTEGER
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rem * DTL_UNDEF Undefine item
RUN AB_BAS (3, status, analog)
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References
DTL_C_DEFINE(); DTL_DEF_AVAIL();