Example usage of energyplus.fmu with JModelica and PyFMI

energyplus_fmu_jmodelica_example.py

import os
from pymodelica import compile_fmu
from pyfmi import load_fmu
import matplotlib.pyplot as plt

# add energyplus cli script to $PATH, not needed if already in $PATH
os.environ['PATH'] = os.environ['PATH'] +":/opt/EnergyPlus/EnergyPlus-8-9-0"

# load .fmu with pyfmi
fmu_path = '<path>/_fmu_export_variable.fmu'
model = load_fmu(fmu=fmu_path)

# change input variable (default in .idf is given to be 6)
model.set('yShadeFMU', 1)

# get options object
opts = model.simulate_options()

# set number of communication points dependent on final_time and .idf steps per hour
final_time = 60*60*72. # 72 hour simulation
idf_steps_per_hour = 6
ncp = final_time/(3600./idf_steps_per_hour)
opts['ncp'] = ncp

# run simulation and return results
res = model.simulate(start_time=0., final_time=final_time, options=opts)
print(res.keys()) # show result variables names

# plot results
fig, ax1 = plt.subplots()
ax1.plot(res['time'], res['TRoo'], 'b-')
ax1.set_xlabel('time (s)')
ax1.set_ylabel('Room Temperature', color='b')
ax1.tick_params('y', colors='b')

ax2 = ax1.twinx()
ax2.plot(res['time'], res['ISolExt'], 'r.')
ax2.set_ylabel('Solar Radiation', color='r')
ax2.tick_params('y', colors='r')
fig.tight_layout()
plt.show()

Hi @stef-papathan and @lymereJ , I am wondering if you have solved this issue. I am struggling with the same issue. I am working with this EnergyPlusToFMU (v.3.1.0, latest version) example file: https://raw.githubusercontent.com/lbl-srg/EnergyPlusToFMU/master/Examples/Actuator/_fmu-export-actuator.idf
My version of EnergyPlus is v.9.4.0 which is the same as the version of the IDF file. Thank you.

Here is the result I got: