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<P>Here is a scenario </P>
AB PLC unit with Flex I/O<BR>
<PRE>
SLC
FEEDER!
!
!
RECEIVER 2------------HUB-----------RECEIVER 1
FLEX1 FLEX 2
</PRE>
<P>To avoid accidental situation that both Receivers and Feeder will try to go to HUB at the same time they have to notify each other of their movements. If BTR and BTW instruction is used. what info should be send? </P>
<P>There are two signal created RECEIVE 1 _HOME , RECEIVER 2_ HOME. and FEEDER _HOME</P>
<P>HOME means opposite side to HUB. and only at that point in time one of them can move towards HUB. Logics of it is simple but what info had to be send. Just these three signals to main processor, which is at FEEDER. Or all I/O signals? At which point? This is a very slow process. My first project assignment I did involved only a processor with its own I/O but this is a new to me with this remote I/O using RIO communication system.</P>
<P>Can you help?!</P>
<P>Tad</P>
AB PLC unit with Flex I/O<BR>
<PRE>
SLC
FEEDER!
!
!
RECEIVER 2------------HUB-----------RECEIVER 1
FLEX1 FLEX 2
</PRE>
<P>To avoid accidental situation that both Receivers and Feeder will try to go to HUB at the same time they have to notify each other of their movements. If BTR and BTW instruction is used. what info should be send? </P>
<P>There are two signal created RECEIVE 1 _HOME , RECEIVER 2_ HOME. and FEEDER _HOME</P>
<P>HOME means opposite side to HUB. and only at that point in time one of them can move towards HUB. Logics of it is simple but what info had to be send. Just these three signals to main processor, which is at FEEDER. Or all I/O signals? At which point? This is a very slow process. My first project assignment I did involved only a processor with its own I/O but this is a new to me with this remote I/O using RIO communication system.</P>
<P>Can you help?!</P>
<P>Tad</P>