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My problem is not supplying the control signals when they need to be, the problem is making it so there is a smooth transition between voltage and current control when the transition is required. If I could guarantee a 50% control signal would create 50% output signal there would be no issue and...

As I said in the first post....."This is a theoretical situation..." The project is to retrofit into large supplies that control metal finishing. Currently the supply inputs are manual knobs, but I need plc control in place of the knobs. And no.. it's not just a matter of set it and forget it...

Thanks.... Both of your assumptions are correct.... the power supply regulates it output based on the SP I provide and I do monitor both output of the supply... Sounds simple enough and is very close to what I have tried. My problem occurs when I switch 'modes'. At the time, I don't know the...

Hi All, Here is my situation... I have a 10V, 10A supply with independent voltage and current control inputs. During a process I have a load attached to the output that will increase in size as time goes. So at the beginning of the process I might set the power supply to 5V,5A and have a .5...

thanks for all of the feedback... Modern OOP (object oriented programming) techniques allow you to write re-usable code and since debugging time for any given code set is directly proportional to the number of lines of code, it doesn't make sense to not write re-usable code. Having said that...

Thanks for the replies.... I thought it would be simple to create an alias, which I can do for any tag other than UDT's and arrays. For each of those, I can create an alias for the base tag definition, but not for the individual element of the array or UDT. For the individual elements, the...

Hi, I am a programmer that has been given that task of writing code for a Compact Logix controller. I have worked with opto22 and CTC PAC systems before, but never with AB stuff, and am having difficulty with a few (hopefully basic) concepts. My project involves monitoring and controlling...