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Questions tagged [minimalmodbus]

MinimalModbus is an easy-to-use Python module for talking to instruments (slaves) from a computer (master) using the Modbus protocol, and is intended to be running on the master. The only dependence is the pySerial module (also pure Python).

The minimalmodbus Python Modbus library is hosted on https://github.com/pyhys/minimalmodbus and has its documentation at https://minimalmodbus.readthedocs.io

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How can modbus be partially corrupted?

I have a modbus slave from which I am receiving what appears to be partially corrupted responses. I have confirmed that the communications are good under some circumstances. In others, I get a checksum error. If send the command 01 04 00 05 00 01…
ericksonla
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Tkinter: multiprocessing on events that happen per second

I have made a Tkinter program that reads from a modbus slave device. Every second it reads the device and displays the output onto labels. However, I have multiple tabs that run the same code for each device connected. While a device is being read,…
GreenSaber
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python minimalmdobus how to interpret register correct?

I'm using python on my raspbian testing system. For communicating with a 10Channel devices (Temco P3-PT10) connected with PT100 temperature sensors im using minimalmodbus. Therefor i want to read register 100~101 for the temperature of Channel…
user3882511
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Handling time-out for Python-script with RS485 & minimalmodbus

Presently have a read-out on an RS485-bus of 1 (one) RS485 kWh-meter, type DDS238-1ZN by means of a Python-script 'assisted' by module minimalmodbus. Adding more kWh-meters means that (prior or during installation) the Slave-Adress of the added…
Toulon7559
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Modbus: Wrong response from the slave

I am trying to write data to DVP28SS2 controller using minimalmodbus in ASCII mode. I have received a response from the controller but it seems wrong. In particular bits, corresponding to slave address and the function code don't match them. The…
Ivan Malakhov
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