If call to GetPLCstatus can't be executed in PLC, then obtained status is disconnected. Status on "None" is not relevant anymore, and is replaced by Disconnected.
BEREMIZ_OBJS = $(BEREMIZSRC:.c=.o)
all: warn some_binary
@echo "*** all done ***"
warn:
@echo "*** Sample Makefile, does nothing ***"
some_binary: $(BEREMIZ_OBJS)
@echo "* Would link $^ -> $@"
%.o: %.c
@echo "* Would compile $< -> $@"