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Two FMUs using PYFMI and the DoStep method Hello guys, I am trying to perform co-simulation using two FMUs from Energyp

Two FMUs using PYFMI and the DoStep method Hello guys, I am trying to perform co-simulation using two FMUs from Energyp

Thank you very much for your rapid responses! I checked the version and is the 2.8.10, seems to be the latest one. Event

Hello guys,

I am trying to perform a simple Do_Step simulation using an .IDF included in the pack of the EnergyPlusToFMU framework.

However, when I try to carry out the simulation step by step, this error appears

FMIL: module = Model, log level = 2: [error][FMU status:Error] fmi2DoStep: An error occured in a previous call. First communication time: 0.000000 !=tStart: 1.000000.

FMIL: module = Model, log level = 2: [error][FMU status:Error] fmi2DoStep: An error occured in a previous call. First communication time: 900.000000 !=tStart: 1.000000.

FMIL: module = Model, log level = 2: [error][FMU status:Error] fmi2DoStep: An error occured in a previous call. First communication time: 1800.000000 !=tStart: 1.000000.

FMIL: module = Model, log level = 2: [error][FMU status:Error] fmi2DoStep: An error occured in a previous call. First communication time: 2700.000000 !=tStart: 1.000000.

This is the code I am using. I do not know what else I can do since the model was initialized

from pyfmi.fmi import FMUModelCS2
ErrorDict=['FMI_OK', 'FMI_WARNING', 'FMI_DISCARD', 'FMI_ERROR','FMI_FATAL','FMI_PENDING']

house = FMUModelCS2("/workspaces/Eplus93/source/house/example.fmu")
starttime=0
finaltime=86400
house.initialize(starttime, finaltime,True)

stepsize=900 # Each 15 minutes
opts = house.simulate_options()
idf_steps_per_hour = 4
ncp = (finaltime-starttime)/(3600./idf_steps_per_hour)
opts['ncp'] = ncp
t_step=starttime
var=[]

while t_step < 1*3600:
    status = house.do_step(current_t=t_step, step_size=stepsize, new_step=True)
    status=ErrorDict[status]
    var.append(['Status flag'+':'+str(status),t_step,np.float(house.get('TRooMea'))])
    t_step +=stepsize

According to Dr. Wetter in link text it seems that EnergyPlus' ExternalInterface object imposes a one-time step delay. Nevertheless, I do not have a clue about how to make the code get this.

The FMU used is here: link text

Thank you very much!

The problem was solved :D !!! The problem was related to the fact that prior initializing the model, the experiment must

I generate the IDF by using OpenStudio, and the E+2FMU version I am using to build the FMU is the 3.1.0

I generate the IDF by using OpenStudio, and the E+2FMU version I am using to build the FMU is the 2.1.0

Thank you for your rapid response! As suggested by you, I did the changes but the problem still remains

Do Step error when using PYFMI Hello guys, I am trying to perform a simple Do_Step simulation using an .IDF included in

Do Step error when using PYFMI Hello guys, I am trying to perform a simple Do_Step simulation using an .IDF included in

I used the same code with an OpenModelica generated FMU, and there is no problem over there. So, it seems to be a tricky

Do Step error when using PYFMI Hello guys, I am trying to perform a simple Do_Step simulation using an .IDF included in

Hi Giorgio, could you please tell me how did you figure it out? I mean, how exactly did you add the Output:Variable rega

Hi guys,

I am facing this problem (the outcome of the .err file)

Program Version,EnergyPlus, Version 9.3.0-baff08990c, YMD=2021.06.16 13:34,

* Fatal * The SQLite database failed to open.

...Summary of Errors that led to program termination:

..... Reference severe error count=0

..... Last severe error=

*** Warning: Node connection errors not checked - most system input has not been read (see previous warning).

*** Fatal error -- final processing. Program exited before simulations began. See previous error messages.

*** EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.

*** EnergyPlus Sizing Error Summary. During Sizing: 0 Warning; 0 Severe Errors.

*** EnergyPlus Terminated--Fatal Error Detected. 0 Warning; 0 Severe Errors; Elapsed Time=00hr 00min 0.30sec

The code works with the .idf example files in EnergyPlustoFMU. However, when I use an .IDF generated by my self, It does not work and this error arise. The FMU is correctly initialized, but can not simulate

lab = load_fmu("312v3.fmu",log_level=4)

days=2

final_time = days2460*60

start_time = 0.

idfstep=6

lab.initialize(start_time, final_time, True)

lab.set('Q',1000)

opts=lab.simulate_options()

ncp=int(final_time/(3600./idfstep))

opts["ncp"] = ncp

res=lab.simulate(start_time=start_time,final_time=final_time, options=opts)

The FMU have one input (Q) and one output (TRooMea). Does anyone know how to solve this issue?

The problem was that the IDF file was generated using OpenStudio, and therefore, it uses SQLite to report output variabl

The FMU file I am using is: link text

The FMU file is allocated in: link text

Thank you for your rapid response Dr. Thierry. I checked running the IDF without the External interface objects and ever

Thank you for your rapid response Dr. Thierry. I checked running the IDF without the External interface objects and ever

Thank you for your rapid response Dr. Thierry. I checked running the IDF without the External interface objects and ever

EnergyPlus FMU SQlite Error Hi guys, I am facing this problem (the outcome of the .err file) Program Version,EnergyPlu

EnergyPlus FMU SQlite Error Hi guys, I am facing this problem (the outcome of the .err file) Program Version,EnergyPlu

Energyplus FMU issues Hi everyone, I am trying to run a FMU from E+. I got this problem in the log file and I do not