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Sparky

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  1. It is true that one can work around virtually any challenge. With the visilogic focus on the ability to indirectly address everything from simple math and store functions to complex formula and vector functions is difficult for me to comprehend not being able to indirectly set the time value in a drum step or to view it without creating yet another timer....
  2. MWD, There are a number of System Operands in the vision series that are very helpful in programming. Here are two ways to view. In Visilogic ladder, bottom half of display, bottom tabs, select Operands. In the left hand window there are SB's, SI's, and SL's. Selecting one of these populates the right hand window with the basic descriptions as well as the present values if you are on line with the plc. In Visilogic ladder, select help, search, System Operands, and you will find much more detailed descriptions of the functions of these operands. It is best to use these as read only for the most part although there are a few that can be manipulated in a positive way. Regards, Sparky
  3. I am using a drum sequencer for the first time to control the sequence of a trim press. The controller is a V350.... It was originally my expectation that this could be a simpler method than using a lot of set and reset coils as I have typically done in the past for this type of application. I also have several possible sequences depending on the tool that is installed in the press. My original intent in the design of this project is to use a single drum to execute multiple sequences, and skipping blocks of steps as certain functions are not required. The resulting drum will not advance based on time, every advance will be event driven. I have several questions as a result of my preliminary programming: How do I display the descriptions of the rows and the outputs while viewing the drum configuration function block to assist in populating the output states? How can I view the contents of the drum configuration while programing? How does the GoTo Step function work? The help file is great on all of the other functions but is not at all clear on this one. How can I view the contents of the drum configuration while debugging? Any help on this would be appreciated. Debugging tomorrow and shipping on Monday!
  4. I am using a Jazz JZ-10-11-UA24 to control a relatively simple ETS furnace. I am using a PT100 for sensing the outdoor air temperature (typically -15 to 100 F) and a type K thermocouple to measure the storage core temperature (Typically 70-1200 F). I have 2 instances of this application in operation with great results with 1 exception. The variables are not as stable as I would like. The PV's change slowly so a heavy filter would be acceptable. I am experienced with the Vision series and have been spoiled by the great selection of FB's. Can someone please help me with an example of code to filter an MI using tools that are available in M90 Ladder?
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