Comments (9)
This worked for me
sudo pip install pymodbus --upgrade
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Well I haven't tried to install this on a Windows machine in a while as I don't actually have one handy. Do you need to reload your terminal so your environment updates maybe? Twisted appears to have installed correctly, can you import any of it?
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Hi, I am not a python expert but I followed this steps to install python packages on a windows machine:
http://es.wikihow.com/instalar-paquetes-de-Python-en-Windows-7
. However i have the same problem with modbuspy. I am using python 2.7.8 and setuptools 0.6c9-py2.7.egg was installed correctly but i can't install modbuspy (setup.py). So now i am thinking about install ubuntu on vmware. Some help pls.
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I am facing the same problem of importing inspite of successful installation of pymodbus
ModuleNotFoundError: No module named 'pymodbus'
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For me, the issue was that an older version of Pymodbus used the syntax:
from Pymodbus.client.sync import ModbusTcpClient
whereas now on the current version the Docs suggest that the sync
has been dropped and the correct syntax is:
from Pymodbus.client import ModbusTcpClient
I had originally installed and developed code in mid-2021 using an older version of Pymodbus, and when duplicating on a new machine, a newer version of Pymodbus had this change of syntax.
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Benblob688 nailed it, get rid of .sync
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After removing the .sync, I get this:
DEBUG:growattRS232:GrowattRS232 initialized with usb port /dev/ttyUSB0 and modbus address 1. Error: TypeError("__init__() got multiple values for argument 'unit'")
Does anybody know what can cause this?
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you are calling with unit=, change that to slave=
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It is a good thing to read the documentation, upgrading to version 3, calls for some modification of your source.
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Related Issues (20)
- target machine actively refused connection HOT 13
- FramerType module not available with pymodbus 3.6.8. HOT 4
- TLS implementation seems broken? HOT 9
- Use pyserial RS485 - not serial_from_url HOT 3
- Serial Communication Drops After Few Messages on Ubuntu HOT 2
- How to get tag name with address HOT 2
- 2 ip address for 1 server HOT 2
- Register data missing HOT 1
- Bug when converting pymodbus.DATATYPE.FLOAT32 to float HOT 6
- pymodbus 3.6.8 does not work, while works with modbus-tk and pymodbus 2.5.3 HOT 5
- Example server_async.py: AttributeError: module 'helper' has no attribute 'get_commandline' HOT 3
- ModbusException not trown while under the hood asyncio.TimeoutError("Server not responding") is fired HOT 3
- Not working after upgrade tp 3.6.9 HOT 7
- examples not working HOT 2
- No response received from remote while modpoll is able to get it HOT 14
- Add issue tracker / source code repository to the doc HOT 4
- move transaction handling into framer socket. HOT 2
- Server and client decoders handle exceptions differently HOT 1
- "no response" or "incomplete message" when using sync client HOT 15
- pymodbus loops indefinitely over received frame HOT 8
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