Host Engineering Forum
General Category => Do-more CPUs and Do-more Designer Software => Topic started by: jreeves on May 15, 2020, 11:35:06 AM
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Is it possible to make the step actions programmable while not connected to a computer through the Do-More software.
I would like to be able to have a user assemble a Ramp/Soak profile through an HMI. It seems the step number and action can only be determined in the Do-More software. I was hoping the action could be a V Register so it can be changed in the field with an HMI.
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Sorry no one answered you for so long a time.
Surely the HMI does not have an infinite number of Ramp/Soak profiles in mind making it necessary to program a Ramp/Soak completely open. Surely there are only certain categorical Ramp/Soak behaviors that your application will be limited to. If this be the case, as would be most common, then you can create multiple RAMPSOAK instructions to mimick those categories, and yet those categories have parameters in them that are completely variable and easily settable with an HMI.
For instance, perhaps I only have 2 categorical behaviors, like initialize, ramp up, soak, ramp down. I could program a RAMPSOAK with that behavior and all the parameters in the initialize, ramp up, soak, ramp down are settable and variable (see pic).
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This is for a temperature control product and this is a feature set that we get from our clients that other controllers PLC packages have. A user can assemble their own multiple step ramp/soak profile. The do-more could have this feature if they had an option to parameterize the profile function to a variable. We are finding creative solutions to implement this.
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I've implemented this functionality with quite a bit of work. Ramping/Profiling is one of the hardest parts for temperature controllers.