--- a.txt    2018-06-12 11:47:24.000000000 +0800
+++ b.txt    2018-06-12 11:47:37.000000000 +0800
@@ -11,7 +11,7 @@

 But for now … done enough hex-dump-reading for today …

-#ifdef PLC
+#ifndef PLC
 #define PLC = Plenty of Lovely Craftbeer

On Sat, Jun 9, 2018 at 12:00 AM, Christofer Dutz <christofer.d...@c-ware.de>

> Hi all,
> today I had a very interesting appointment with a large pharmaceutical
> company which are planning on giving PLC4X a try. If this works this would
> be a huge thing for our project as well as that company.
> After discussing multiple options of safely communicating PLC data from
> inside the production-network to a less safe network, we started
> investigating the protocols going over the wire.
> The controllers used are Emerson DeltaV MV Controllers and they
> communicate with a matching Emerson OS (Operator-System … not OperatING
> System) … for me this is sort of a Emerson SCADA System.
> What directly popped my eye was that all communication is done using UDP
> on port 18507 and every packet sent starts with the first two bytes “0xFA”
> and “0xCE” … “FACE” … I couldn’t find any mention of a protocol name and
> hereby no spec or whatsoever information. Right now I’m doing a manual
> pattern detection in my WireShark recording and will definitely start
> automating that to prove my assumptions.
> But I was hoping that someone here on the list might be able to provide
> some information and eventually give me the one or the other useful hint.
> But for now … done enough hex-dump-reading for today …
> #ifdef PLC
> #define PLC = Plenty of Lovely Craftbeer
> #endif
> Have a nice weekend :-)
> Chris

Niclas Hedhman, Software Developer
http://polygene.apache.org - New Energy for Java

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