ruscito / pycomm

pycomm is a package that includes a collection of modules used to communicate with PLCs
MIT License
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Fully connect to a MicroLogix1100 in UBUNTU Py3.6.7, but not on an WINDOWS server. #64

Open lcflorindo opened 4 years ago

lcflorindo commented 4 years ago

Hi, as I said, I was fully able to use pycomm 1.0.8 to read from my MicroLogix1100 on a 3.6.7 Python, but when I tried to deploy/reply into an Windows AWS with same py/libs versions it just doesn't work. Btw, another thing that I tried is change to a wrong/non-plc ip, and it runs the normal timeout error.

What is the relation about OS? Cause I got a similar error on Linux Suse12 as well... There is any incompatibility about how I code the IP Address or something?

Code:

from pycomm.ab_comm.slc import Driver as SlcDriver
import logging
plc = SlcDriver()
ip = '10.11.12.123'
plc.open(ip)
strr = str(plc.read_tag("N7:0/1"))
plc.close()
print(strr)

Error:

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
d:\anaconda3\envs\pycaml8\lib\site-packages\pycomm\cip\cip_base.py in build_header(self, command, length)
    616             h = command                                 # Command UINT
--> 617             h += pack_uint(length)                      # Length UINT
    618             h += pack_dint(self._session)                # Session Handle UDINT

TypeError: must be str, not bytes

During handling of the above exception, another exception occurred:

CommError                                 Traceback (most recent call last)
d:\anaconda3\envs\pycaml8\lib\site-packages\pycomm\cip\cip_base.py in open(self, ip_address)
    785                 self.attribs['ip address'] = ip_address
--> 786                 if self.register_session() is None:
    787                     self._status = (13, "Session not registered")

d:\anaconda3\envs\pycaml8\lib\site-packages\pycomm\cip\cip_base.py in register_session(self)
    634         self._session = 0
--> 635         self._message = self.build_header(ENCAPSULATION_COMMAND['register_session'], 4)
    636         self._message += pack_uint(self.attribs['protocol version'])

d:\anaconda3\envs\pycaml8\lib\site-packages\pycomm\cip\cip_base.py in build_header(self, command, length)
    623         except Exception as e:
--> 624             raise CommError(e)
    625 

CommError: must be str, not bytes

During handling of the above exception, another exception occurred:

CommError                                 Traceback (most recent call last)
<ipython-input-1-49a9409fe35c> in <module>
    218             flag = True
    219             while(flag):
--> 220                 plc.open("10.11.12.123")
    221                 string = plc.read_tag("N7:0/1")
    222                 plc.close()

d:\anaconda3\envs\pycaml8\lib\site-packages\pycomm\cip\cip_base.py in open(self, ip_address)
    791             except Exception as e:
    792                 #self.clean_up()
--> 793                 raise CommError(e)
    794 
    795     def close(self):

CommError: must be str, not bytes