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S7-1200 Session Setup Incomplete #710

@xBiggs

Description

@xBiggs

Hello, I am trying to connect to a S7-1200 FW v4.2.2 TIA Portal v19.

This table says that my PLC uses S7CommPlus V1 and is supported.

I ran the following using the master branch:

#!/usr/bin/env python3
from s7 import Client

if __name__ == '__main__':
  client = Client()
  client.connect("192.168.0.1", 0, 1)
  variables = client.browse()
  print(variables)
  client.disconnect()

Output:

/python-snap7-master$ ./main.py
PLC did not provide ServerSessionVersion - session setup incomplete
Traceback (most recent call last):
  File "/python-snap7-master/./main.py", line 7, in <module>
    variables = client.browse()
  File "/python-snap7-master/s7/client.py", line 302, in browse
    raise RuntimeError("browse() requires S7CommPlus connection")
RuntimeError: browse() requires S7CommPlus connection

Attached is a zipped pcap S71200Filtered.zip

Let me know if I am doing something wrong here

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