directly without open a

open to ask

LastError (Function) Open

by BACnetOpen

) Open (Method) Read

Create() or LogOpen(). Use Log

by ::BACnetOpen

_PROT_CLASS_MODBUS_RTU UDINT 16#11 RCX_PROT_CLASS_OPEN

_Exit (Method) IsOpen (Method) Open (Method) Write

#800A0009 CIFX_FILE_OPEN [...] #800B0033 CIFX_DRV_NOT_OPENED