transmitting a message on a cp340 with 3964r

anotherone

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A
Join Date
Nov 2006
Location
Tshwane
Posts
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I have been trying to send a message to a scada system using a cp340. the message shape is in bytes the form : port,type,system,subsystem,11 data bytes,count.the data byte represent an ascii code. I have tried to send this message like in the example provided by siemens but it does not work. my message only comes out as gibberish on a data analyzer.I am using the same CP to send a message different to this one using the same method and it works.
 

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