Closed jnzhuang closed 5 years ago
Could you share the details from the XML template? I am interested in looking at the slave id etc.
Thank you very much. Please refer to the attached file. Actually it is just the original default modbus.xml file with only one modification that I changed mode “serial” to “tcp”. My pcap file is also attached.
I tried to read your code yesterday, and the code is written nicely. I found that the exception is raised by self._write_single_coil, which is a function in modbus-tk. Just for your reference.
Thank you very much.
Best regards, Jianing Zhuang
On Jul 8, 2019, at 12:25 AM, Abhinav Saxena notifications@github.com wrote:
Could you share the details from the XML template? I am interested in looking at the slave id etc.
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Hey Jianing,
please do not send the attachment via eMail but post the content here on Github :)
Oh, oh. I am so sorry. I will post it on GitHub.
On Jul 8, 2019, at 8:13 AM, creolis notifications@github.com wrote:
Hey Jianing,
please do not send the attachment via eMail but post the content here on Github :)
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Thank you very much for your attention. The file modbus.xml is attached. I remember also that I changed the port number to 502. I changed the suffix of the uploaded xml file to txt so thath I can upload it properly. Thank you very much. modbus.txt
In my request_pdu, the data_address field parsed by _write_single_coil is 304. How could I modify xml file accordingly? @xandfury @creolis
Oh, I found it. In conpot/templates/default/template.xml Just to change range(0,128) to range(0,x) where x is something larger than 304 will be fine. I focused too much in modbus.xml.
I tried to use conpot as a modbus slave, and I used libmodbus to generate a serial of modbus requests sent to conpot. Unfortunately, each the response packets contains an Exception of “Illegal data address”. (As an example, please take a look at the snapshot of attached pcap file, comprising only one request and one response in modbus protocol). I tried to look up the answer online, and found this: https://github.com/mushorg/conpot/issues/288, which suggests modify the starting address of COILS to 0. But the solution does not work for me. So I am writing to ask if someone can give me some advice to solve the problem. Thank you very much.