FileEOF : RTS_IEC_RESULT VAR_INPUT hFile : RTS_IEC [...] result could look like

Local_DateAndTime : UDINT ; Result : RTS_IEC_RESULT [...] TimeDate ; Result : RTS_IEC_RESULT [...] the IEC 61131-3

IEC. Optional means [...] RTSCertVerfier , ADR ( udiResult [...] VerificationMode ), ADR ( udiResult

the IEC objects [...] semantics as a result of [...] a rts