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Support Forum for HVAC and pumping machines, Modicon M17x and EcoStruxure Machine Expert HVAC software for chillers, AHU, CRAC units for datacenters or process chillers applications - from design, implementation to troubleshooting and more, by Schneider Electric.
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Posted: 2026-05-18 10:02 AM
I would like to automate how both digital and analog inputs behave by default when using a simulation instance for a given project. What I mean by this is that i.e. DI1= DI2=DI3= TRUE and DI4=DI5=DI6 = FALSE when the program is run.
A couple of questions: how is the SIMUL environment variable used in this context ? Can I somehow use this variable inside the project ? I noticed that simply trying to use it does not compile.
I´ve also been checking the TDVA_AHU_Simple project as a reference and noticed that variables associated to inputs are dependent on a boolean variable named xSimulation. I was trying to find out if this variable is set automatically to TRUE when running a simulation instance but if that is true, I could not find out where this magic is done. Can anyone explain please ?
Or what different approach to this maybe taken ?
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Posted: 2026-05-20 01:46 AM
Hi,
latest version of simulator (ESME HVAC 1.10) keeps into memory the latest values of AI and DI:
You have to add an I/O panel for the Digital Inputs of your application
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Posted: 2026-05-20 01:46 AM
Hi,
latest version of simulator (ESME HVAC 1.10) keeps into memory the latest values of AI and DI:
You have to add an I/O panel for the Digital Inputs of your application
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Posted: 2026-05-21 05:07 AM
Thanks. That should work then.
The code included in the AHU simple project was meant for that purpose before this was available ?
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