modbus_rtu_example

gistfile1.txt

# 
# refer to 
#          https://pymodbus.readthedocs.io/en/latest/source/example/synchronous_client.html
#          https://pymodbus.readthedocs.io/en/latest/source/example/synchronous_client_ext.html
#
# pip install pymodbus   (not update this into requirement.txt)
# 
#     this program is only test for Modbus RTU 
#     this is working as a Modbus RTU Master and then everytime write/read holdregs in a Slave
#     check the status of slave device 

from pymodbus.client.sync import ModbusSerialClient
from pymodbus.constants import Endian                       # Endian and World 
from pymodbus.payload import BinaryPayloadDecoder           # decode binaries when read datas from Modbus-RTU
from threading import Timer
import time
import logging
import sys

from optparse import OptionParser
#from enum import IntEnum

from pymodbus.payload import BinaryPayloadBuilder           # encode binaries when write datas into Modbus-RTU
from os import path, stat, SEEK_END
from struct import pack
import struct

# for checking speed 
## only option (no need)
#from tqdm import tqdm