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Thread: Replacing values in Mysql with a condition
Post: Replacing values in Mysql with a condition
| Good evening everyone. Help in python to create a query in the Mysql database. Problem essence: There is a table, in it columns (Sil1 | Sil2 | Sil3) the data in a format -37.4 | -98.0 | -25.2. I need ... |
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stsxbel |
General Coding Help |
0 |
642 |
Mar-05-2023, 08:20 PM |
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Thread: Problem with pymodbus - ModuleNotFoundError: No module named 'pymodbus.client.sync'
Post: Problem with pymodbus - ModuleNotFoundError: No mo...
| Good afternoon. I installed a new server, installed pymodbus via pip, uploaded my scripts that worked on the old server, but when I start it, I get an error: ModuleNotFoundError: No module named 'pymo... |
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stsxbel |
General Coding Help |
2 |
23,819 |
Dec-05-2022, 02:08 PM |
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Thread: Pymysql delete specific rows in tableview
Post: Pymysql delete specific rows in tableview
| There is a database, data is constantly written to it, but sometimes data 0.0 gets. An entry appears in the table with values, for example prod1=0.0/ prod2=0.0/ prod3=0.0. And there can be a lot of su... |
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stsxbel |
General Coding Help |
2 |
1,095 |
Aug-18-2022, 08:15 AM |
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Thread: KeyError: 2
Post: RE: KeyError: 2
| oops. Thank you. Everything is working :-) |
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stsxbel |
General Coding Help |
8 |
1,735 |
Aug-16-2022, 06:29 PM |
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Thread: KeyError: 2
Post: RE: KeyError: 2
| Thanks, figured it out. You need to use row["product1"]. But the problem remained in another :-( everything works as it should, only the result is not written to the database for some reason :-(
[15... |
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stsxbel |
General Coding Help |
8 |
1,735 |
Aug-16-2022, 06:05 PM |
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Thread: KeyError: 2
Post: RE: KeyError: 2
| (Aug-16-2022, 05:48 PM)deanhystad Wrote: According to your print row is a dictioany, not a list. You can use row["id"] or row["date"] or row["product1"]. You cannot do row[2] or row[3]. Maybe tha... |
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stsxbel |
General Coding Help |
8 |
1,735 |
Aug-16-2022, 05:55 PM |
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Thread: KeyError: 2
Post: RE: KeyError: 2
| (Aug-16-2022, 05:17 PM)ibreeden Wrote: Apparently "row" does not contain what you expect. So in such cases always add a print statement just before the line where the error occurs.
print(row)What d... |
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stsxbel |
General Coding Help |
8 |
1,735 |
Aug-16-2022, 05:34 PM |
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Thread: KeyError: 2
Post: KeyError: 2
| Good evening, the second day I struggle with the code, then there is no entry in the database, then the error is KeyError: 2
import struct
import sys
import time
import datetime
import pymysql.cursor... |
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stsxbel |
General Coding Help |
8 |
1,735 |
Aug-16-2022, 04:15 PM |
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Thread: Pymodbus Write value to register
Post: RE: Pymodbus Write value to register
| Thanks a lot, got it. :-) I forgot to write one more parameter to another register |
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stsxbel |
General Coding Help |
10 |
8,218 |
Aug-15-2022, 11:46 AM |
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Thread: Pymodbus Write value to register
Post: RE: Pymodbus Write value to register
| Can't even write the value to the register.
from pymodbus.client.sync import ModbusSerialClient
from pymodbus.exceptions import ModbusIOException
unit = 1
client = ModbusSerialClient(method='rtu',... |
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stsxbel |
General Coding Help |
10 |
8,218 |
Aug-12-2022, 12:56 PM |
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Thread: Pymodbus Write value to register
Post: RE: Pymodbus Write value to register
| I tried everything. In the documentation, I found a method for connecting RTU. the registers are still shifted by 1, i.e. instead of 40006 it will be 40005. But the error still pops up:
Quote:Values:... |
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stsxbel |
General Coding Help |
10 |
8,218 |
Aug-12-2022, 07:39 AM |
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Thread: Pymodbus Write value to register
Post: RE: Pymodbus Write value to register
| From the device description |
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stsxbel |
General Coding Help |
10 |
8,218 |
Aug-10-2022, 12:06 PM |
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Thread: Pymodbus Write value to register
Post: RE: Pymodbus Write value to register
| Here's what happens. continuously
Quote:Values: Exception Response(132, 4, IllegalFunction)
Object Type: <class 'pymodbus.pdu.ExceptionResponse'>
['ExceptionOffset', '__class__', '__delattr__', ... |
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stsxbel |
General Coding Help |
10 |
8,218 |
Aug-10-2022, 11:49 AM |
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Thread: Pymodbus Write value to register
Post: RE: Pymodbus Write value to register
| An error is thrown
Quote:Values: Exception Response(132, 4, IllegalFunction)
Traceback (most recent call last):
File "/home/pokip/winox1.py", line 28, in <module>
if values[0] == 0xFFFF:
T... |
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stsxbel |
General Coding Help |
10 |
8,218 |
Aug-10-2022, 11:17 AM |
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Thread: Pymodbus Write value to register
Post: Pymodbus Write value to register
| Good afternoon. Only on your forum lately I can find answers to my questions. Tell me, send new devices, I can’t extract data from them using Python. I can't figure out how to send the value to the re... |
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stsxbel |
General Coding Help |
10 |
8,218 |
Aug-10-2022, 08:31 AM |
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Thread: Repeat request by else
Post: RE: Repeat request by else
| (Jul-28-2022, 05:49 PM)deanhystad Wrote: You need a loop to repeat sending the request until the responses match. I do not know enough about your process to know what code belongs inside the loop ... |
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stsxbel |
General Coding Help |
2 |
1,185 |
Jul-30-2022, 03:34 PM |
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Thread: Repeat request by else
Post: Repeat request by else
| Good afternoon, there is a code that removes parameters, the request is made 2 times and if the answers match, the data is written to the database. I did not have any problems with this, if the data i... |
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stsxbel |
General Coding Help |
2 |
1,185 |
Jul-28-2022, 04:37 PM |
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Thread: On error - go to the next task
Post: RE: On error - go to the next task
| Thank you. The simplest and most important working solution. **biggrin** |
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stsxbel |
General Coding Help |
2 |
1,577 |
Jul-12-2021, 10:15 PM |
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Thread: On error - go to the next task
Post: On error - go to the next task
| There is a code that interrogates the device via modbus, in the code several devices are interrogated. When the device is turned off, there is no data, therefore an error is obtained and the program i... |
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stsxbel |
General Coding Help |
2 |
1,577 |
Jul-12-2021, 09:04 PM |
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Thread: Conditional evaluation
Post: RE: Conditional evaluation
| It worked in this version:
a1 = float(140.2)
b1 = float(6543.5)
silos1a = b1 - a1
if silos1a > 0:
print(f'Расход: {silos1a:.1f}')
else:
silos1a = b1 - 6553.5 - a1
print(f'Расход: {si... |
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stsxbel |
General Coding Help |
7 |
3,524 |
Jun-13-2021, 06:56 PM |
