A
<P>I have two 450 processors networked to one scan node as below:</P>
<PRE>
PLC A PLC B
___ ___
I I I I
I___I I___I
I I
5 Ohm I I 5 Ohm T
[-----------------------------------------------]
BNC Network I
_I_
I I
I___I
SCADA
</PRE>
<P>I have been losing communication with PLC B while communication with PLC A is still healthy. I havetried checking the SCADA (FIX32 from Intellution - a rather old version I know...) and all the cables. There is no sign of damage on the cards and cables. To reset communications, I have to reset the whole system. What am I missing?</P>
<PRE>
PLC A PLC B
___ ___
I I I I
I___I I___I
I I
5 Ohm I I 5 Ohm T
[-----------------------------------------------]
BNC Network I
_I_
I I
I___I
SCADA
</PRE>
<P>I have been losing communication with PLC B while communication with PLC A is still healthy. I havetried checking the SCADA (FIX32 from Intellution - a rather old version I know...) and all the cables. There is no sign of damage on the cards and cables. To reset communications, I have to reset the whole system. What am I missing?</P>