lecore 0.1.13

Logic Elements core utilities

LE core package

This is package of core python utils for LE containing:

• Looger
• Proprietary LeBin protocol
• Proprietary Modbus RTU register map handling - VisualModbus
• Test frame
• Logic Elements devices

Install

Install or update version

pip install lecore
pip install --upgrade lecore

Import

Import package as usual

import lecore

LE devices - Modbus RTU slave

The following Modbus RTU devices are supported:

RTD Emulator

4-channel RTD emulator, see https://logicelements.cz/en/products/rtd-emulator.

Example of usage:

import lecore.Devices.RtdEmul as RE

# Create RTD emulator object
rtd = RE.RtdEmul()

# Open communication at COM2 (default is COM1) with default COM parameters
rtd.open(comport='COM2')

# Read serial number
sn = rtd.read(RE.Reg.FACT_SERIAL_NUMBER)

# Write stock resistance and beta
rtd.write(RE.Regs.EMUL_NTC_STOCK_RES, 10000)
rtd.write(RE.Regs.EMUL_NTC_BETA, 3977)

# Write emulated temperature at output 1
rtd.write(RE.Regs.EMUL_TEMPERATURE_1, 30.5)

Looger

Class Looger allows for sending debug data into Development Debug Server (DDS) a.k.a. Looger. Public instance run at https://looger.jablotron.cz

Create instance when default public endpoint is to be used

import lecore

# Create Looger object
looger = lecore.Looger()

# Set device properties
looger.set_device(0x111CC1234, 0, None)

# Send data collection and text message
data = {'data_1': 1, 'data_2': 2}
log = f"Message to log"
looger.send(data, log, 0)

# Send just log message
looger.send_log(log)