CP341 ASCII transmission problem (incomplete frame?)

genesisfm

Member
Join Date
Apr 2008
Location
Europe
Posts
23
Hello,

I'm trying to communicate with a PC (RS232)but right now I got the following problem.

Hardware: S7 313C DP + CP341
Software: Orginal S7 bloks + ASCII settings on CP341 (On Expiry of Character Delay Time)

I'm sending the following string (for example, i tryed more frames with the same result):

<EOT>1122<STX>0121256<ETX>0<EOT>1155<STX>0121341<ETX>7<EOT>1166<STX>0121148<ETX><

But when i'm looking into the rec. database i will see:

<EOT>1122<STX>0121256<ETX>0<EOT<EOT>1122<STX>0121256<ETX>0<EOT<EOT>1122<STX>0121256<ETX>0

It looks like the CP341 cut-off the string after the next <EOT.... and starting again with a first message.

Did someone have a solution for this problem?

Thank you.

Best regards,

Rob
 
Try sending several telegrams and monitoring the rcv DB at the same time (use intervals of several seconds in between telegrams).

Is every new (but incorrect) telegram received and placed at the very top of the rcv DB? Then I'm pretty sure it's something silly like not exactly matching baudrates.
 

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